TTile Streak

Hard vocabulary words are the ones that sound simple until you have to define them on the spot. This page collects a working list of them, each one broken down so the meaning actually sticks.

How the list works

Every word on this page shows four things: how to say it, its part of speech, a plain meaning, and a short example sentence. Scroll the list to read through it, or jump to the play this list board and guess words pulled only from this page. The board uses the same green, yellow and gray tiles as Tile Streak's other word games: green for a right letter in the right spot, yellow for a right letter in the wrong spot, gray for a letter that is not in the word.

We keep the source of this list documented, but we do not publish a fixed word count or call it complete. New words get added as we finish documenting them, so the list you see today is a snapshot, not a final edition.

A few examples from the list

Ubiquitous (adjective): seeming to be everywhere at once. "Free wifi is almost ubiquitous in city cafes now."

Cacophony (noun): a harsh mix of sounds. "The kitchen fell into a cacophony of pans and shouted orders during the lunch rush."

Ephemeral (adjective): lasting only a short time. "The snow was ephemeral, gone by noon."

Magnanimous (adjective): generous, especially toward someone you could have treated worse. "She was magnanimous in victory and thanked her opponent by name."

Each entry on the full list works the same way: word, sound, part of speech, meaning, example. That structure is what makes a hard word usable instead of just memorized.

Study tips

Read the example sentence out loud. Hearing the word in context does more for recall than staring at the definition alone.

Write your own sentence before you check ours. Guessing wrong and then correcting yourself locks the meaning in faster than reading a correct sentence first.

Group words by feel, not by letter. Words that share a mood, formal, negative, surprising, are easier to recall together than words that just start with the same letter.

Retest after a few days, not right away. A word you can define an hour after reading it often slips within a week without a second pass.

For teachers and self-study learners

If you're planning a lesson, this list works as a ready block of vocabulary with meanings and examples already written, so you can pull five or ten words straight into a handout. For self-study, the play this list board turns the same words into a short daily habit: a few minutes on the board, then a look back at any word you missed.

Neither path needs an account. Progress on the board stays on your device.

Keep going

Turn the words into a quiz with vocabulary quiz, or browse the wider vocabulary games hub for more ways to practice. For general study habits beyond this one list, see how to improve your vocabulary. And for the full picture of what Tile Streak covers at this level, vocabulary words lists every set we've built so far.

The list

WordSay itPart of speechWhat it means
ABLOOM/əˈblum/adjWhen the bud, or buds, on a plant are bursting into flower.
ABSTRACT/æbsˈtrækt/nounA concept or idea not associated with any specific instance.
ABUNDANCE/əˈbʌndəns/nounThe property of a more than adequate quantity or supply.
ABUNDANT/əˈbʌndənt/adjPresent in great quantity.
ADULTERY/əˈdʌltɚi/nounExtramarital sex that willfully and maliciously interferes with marriage relations.
ADVERSITY/ædˈvɝsɪˌti/nounA state of misfortune or affliction.
AGLEAM/əˈɡlim/adjBright with a steady but subdued shining.
AGLITTER/əˈɡlɪtɚ/adjHaving brief brilliant points or flashes of light.
ANTIKNOCK/ˌæntiˈnɑk/adjSuppressing or eliminating engine knock in combustion engines.
ARISTOCRATIC/ɚˌɪstəˈkrætɪk/adjBelonging to or characteristic of the nobility or aristocracy.
AROUSE/ɚˈaʊz/verbCall forth (emotions, feelings, and responses).
ARRAY/ɚˈeɪ/nounAn orderly arrangement.
ARSON/ˈɑrsən/nounMalicious burning to destroy property.
ATROCIOUS/əˈtroʊʃəs/adjShockingly brutal or cruel.
BANKRUPT/ˈbæŋkrəpt/adjFinancially ruined.
BARGAINER/ˈbɑrɡɪnɚ/nounNegotiator of the terms of a transaction.
BAROQUE/bɚˈoʊk/adjHaving elaborate symmetrical ornamentation.
BOTANY/ˈbɑtəni/nounAll the plant life in a particular region or period.
BRAZEN/ˈbreɪzən/verbFace with defiance or impudence.
BRINK/brɪŋk/nounThe limit beyond which something happens or changes.
CARBONIZE/ˈkɑrbəˌnaɪz/verbTurn into carbon, as by burning.
CHLORINATE/ˈklɔrəˌneɪt/verbDisinfect with chlorine.
CHORAL/ˈkɔrəl/adjRelated to or written for or performed by a chorus or choir.
COLLATE/kəˈleɪt/verbTo assemble in proper sequence.
COMBUSTION/kəmˈbʌstʃən/nounA state of violent disturbance and excitement.
COMRADE/ˈkɑmˌræd/nounUsed as a term of address for those male persons engaged in the same movement.
CONCEPTUAL/kənˈsɛptʃuəl/adjBeing or characterized by concepts or their formation.
CONCOCT/kənˈkɑkt/verbPrepare or cook by mixing ingredients.
CONCOCTION/kənˈkɑkʃən/nounAny foodstuff made by combining different ingredients.
CONFORMITY/kənˈfɔrməti/nounActing according to certain accepted standards.
CONSTIPATE/ˈkɑnstəˌpeɪt/verbCause to be constipated.
CONTAGIOUSNESS/kənˈteɪdʒəsnəs/nounThe state or condition of being contagious, easily transmitted to others.
CORRUGATE/ˈkɔrəˌɡeɪt/verbFold into ridges.
COURTSHIP/ˈkɔrˌtʃɪp/nounA man's courting of a woman; seeking the affections of a woman (usually with the hope of marriage).
COVERT/ˈkoʊvɚt/nounA covering that serves to conceal or shelter something.
DAPPER/ˈdæpɚ/adjMarked by up-to-dateness in dress and manners.
DECADENT/ˈdɛkədənt/adjLuxuriously self-indulgent.
DECREE/dɪˈkri/verbIssue a decree.
DEJECTED/dɪˈdʒɛktɪd/adjAffected or marked by low spirits.
DEMOCRATIC/ˌdɛməˈkrætɪk/adjCharacterized by or advocating or based upon the principles of democracy or social equality.
DESOLATE/ˈdɛsələt/adjProviding no shelter or sustenance.
DEVIANT/ˈdiviənt/adjMarkedly different from an accepted norm.
DEVIATION/ˌdiviˈeɪʃən/nounA variation that deviates from the standard or norm.
DISCLOSE/dɪsˈkloʊz/verbMake known to the public information that was previously known only to a few people or that was meant to be kept a secret.
DISCRETION/dɪsˈkrɛʃən/nounKnowing how to avoid embarrassment or distress.
DISPOSITION/ˌdɪspəˈzɪʃən/nounYour usual mood.
DISSENT/dɪˈsɛnt/nounThe difference of one judge's opinion from that of the majority.
DIVERSE/daɪˈvɝs/adjMany and different.
DOCILE/ˈdɑsəl/adjWilling to be taught or led or supervised or directed.
DOGMA/ˈdɑɡmə/nounA doctrine or code of beliefs accepted as authoritative.
DUBIOUS/ˈdubiəs/adjFraught with uncertainty or doubt.
ECONOMIC/ˌɛkəˈnɑmɪk/adjUsing the minimum of time or resources necessary for effectiveness.
ECONOMY/ɪˈkɑnəmi/nounFrugality in the expenditure of money or resources.
EDIFICE/ˈɛdəfəs/nounA structure that has a roof and walls and stands more or less permanently in one place.
ELABORATE/ɪˈlæbrət/adjMarked by complexity and richness of detail.
ELATED/ɪˈleɪtəd/adjExultantly proud and joyful; in high spirits.
ELEEMOSYNARY/ˌɛləˈmɔsəˌnɛri/adjGenerous in assistance to the poor.
ENTAIL/ɛnˈteɪl/verbImpose, involve, or imply as a necessary accompaniment or result.
EPIDEMIC/ˌɛpəˈdɛmɪk/adjOf disease or anything resembling a disease; attacking or affecting many individuals in a community or a population simultaneously.
EPISODIC/ˌɛpəˈsɑdɪk/adjOf writing or narration; divided into or composed of episodes.
ETHNIC/ˈɛθnɪk/adjDenoting or deriving from or distinctive of the ways of living built up by a group of people.
EVOKE/ɪˈvoʊk/verbCall forth (emotions, feelings, and responses).
EXERTION/ɪɡˈzɝʃən/nounUse of physical or mental energy; hard work.
EXQUISITE/ˈɛkskwəzət/adjIntense or sharp.
EXTENUATE/ɪkˈstɛnjuˌeɪt/verbLessen or to try to lessen the seriousness or extent of.
EXTRAVAGANT/ɛksˈtrævəɡənt/adjUnrestrained, especially with regard to feelings.
FABRICATION/ˌfæbrɪˈkeɪʃən/nounThe act of making something (a product) from raw materials.
FANCIFUL/ˈfænsɪfəl/adjNot based on fact; existing only in the imagination.
FATIGUE/fəˈtiɡ/nounTemporary loss of strength and energy resulting from hard physical or mental work.
FICTITIOUS/fɪkˈtɪʃəs/adjAdopted in order to deceive.
FOLLY/ˈfɑli/nounThe quality of being rash and foolish.
FORTUITOUS/fɔrˈtuɪtəs/adjHaving no cause or apparent cause.
FRIGID/ˈfrɪdʒəd/adjSexually unresponsive.
FRUGAL/ˈfruɡəl/adjAvoiding waste.
FUTILE/ˈfjutəl/adjUnproductive of success.
GASTRIC/ˈɡæstrɪk/adjRelating to or involving the stomach.
GAUNT/ɡɔnt/adjVery thin especially from disease or hunger or cold.
GHETTO/ˈɡɛtoʊ/nounAny segregated mode of living or working that results from bias or stereotyping.
GIN/dʒɪn/verbTrap with a snare.
GIRDLE/ˈɡɝdəl/verbCut a girdle around so as to kill by interrupting the circulation of water and nutrients.
GLACIAL/ˈɡleɪʃəl/adjRelating to or derived from a glacier.
GRADUATE/ˈɡrædʒəwət/verbMake fine adjustments or divide into marked intervals for optimal measuring.
HALLUCINATION/həˌlusəˈneɪʃən/nounA mistaken or unfounded opinion or idea.
HAPHAZARD/hæpˈhæzɚd/adjDependent upon or characterized by chance.
HIERARCHY/ˈhaɪɚˌɑrki/nounA series of ordered groupings of people or things within a system.
HUMANE/hjuˈmeɪn/adjPertaining to or concerned with the humanities.
HUMANITARIAN/ˌhjuˌmænəˈtɛriən/adjMarked by humanistic values and devotion to human welfare.
HYMENEAL/ˌhɪməˈniəl/adjOf or relating to a wedding or marriage.
HYPOTHESIS/haɪˈpɑθəsəs/nounA tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena.
IMMORAL/ˌɪˈmɔrəl/adjNot adhering to ethical or moral principles.
IMMUNITY/ˌɪˈmjunəti/nounThe quality of being unaffected by something.
IMPOTENT/ˈɪmpətənt/adjLacking power or ability.
INCOMPETENT/ˌɪnˈkɑmpətənt/adjNot qualified or suited for a purpose.
INDEFEASIBLE/ˌɪdəˈfizəbəl/adjNot liable to being annulled or voided or undone.
INDUCE/ˌɪnˈdus/verbCause to arise.
INFIRM/ɪnˈfɝm/adjLacking firmness of will or character or purpose.
INKLING/ˈɪŋklɪŋ/nounA slight suggestion or vague understanding.
INNATE/ˌɪˈneɪt/adjBeing talented through inherited qualities.
INSOLENT/ˈɪnsələnt/adjUnrestrained by convention or propriety.
INTELLECTUAL/ˌɪntəˈlɛktʃuəl/adjAppealing to or using the intellect.
INTERCONTINENTAL/ˌɪntɚˌkɑntəˈnɛntəl/adjExtending or taking place between or among continents.
INTERIM/ˈɪntɚəm/adjServing during an intermediate interval of time.
INTIMATE/ˈɪntəmət/adjMarked by close acquaintance, association, or familiarity.
LATENT/ˈleɪtənt/adjPotentially existing but not presently evident or realized.
LINEAR/ˈlɪniɚ/adjOf or in or along or relating to a line; involving or having a single dimension.
LISTLESS/ˈlɪstləs/adjLacking zest or vivacity.
LUBRICATE/ˈlubrɪˌkeɪt/verbApply a lubricant to.
LUBRICIOUS/luˈbrɪʃəs/adjHaving a smooth or slippery quality.
MACABRE/məˈkɑbrə/adjShockingly repellent; inspiring horror.
MALICIOUS/məˈlɪʃəs/adjHaving the nature of or resulting from malice.
MARITAL/ˈmɛrətəl/adjOf or relating to the state of marriage.
MARSHAL/ˈmɑrʃəl/verbArrange in logical order.
MEEK/mik/adjVery docile.
MOMENTUM/moʊˈmɛntəm/nounAn impelling force or strength.
MUDDLEHEADED/ˈmʌdəlˌhɛdəd/adjStupid and confused.
NARCOTIC/nɑrˈkɑtɪk/adjOf or relating to or designating narcotics.
NETTLESOME/ˈnɛtəlsəm/adjEasily irritated or annoyed.
NEURAL/ˈnʊrəl/adjOf or relating to the nervous system.
NEUROTIC/nʊˈrɑtɪk/adjCharacteristic of or affected by neurosis.
NONCHALANT/ˌnɑnʃəˈlɑnt/adjMarked by blithe unconcern.
NONRACIAL/nɑnˈreɪʃəl/adjNot racial; having nothing to do with race or races.
OBLIGING/əˈblaɪdʒɪŋ/adjShowing a cheerful willingness to do favors for others.
OBLIVION/əˈblɪviən/nounTotal forgetfulness.
OBSCURE/əbsˈkjʊr/adjNot clearly expressed or understood.
OVERPROTECT/ˌoʊvɚprəˈtɛkt/verbProtect excessively.
OVERT/oʊˈvɝt/adjOpen and observable; not secret or hidden.
PARADOX/ˈpɛrəˌdɑks/nounA statement that contradicts itself.
PAROCHIAL/pɚˈoʊkiəl/adjNarrowly restricted in outlook or scope.
PASSIVE/ˈpæsɪv/nounThe voice used to indicate that the grammatical subject of the verb is the recipient (not the source) of the action denoted by the verb.
PAYROLL/ˈpeɪˌroʊl/nounA list of employees and their salaries.
PECTIC/ˈpɛktɪk/adjOf or relating to or derived from pectin.
PERCEPTION/pɚˈsɛpʃən/nounA way of conceiving something.
PERCIPIENT/pɚˈsɪpiənt/adjCharacterized by ease and quickness in perceiving.
PERSPIRATION/ˌpɝspɚˈeɪʃən/nounThe process of the sweat glands of the skin secreting a salty fluid.
PLASMA/ˈplæzmə/nounA fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors; a gas becomes a plasma when it is heated until the atoms lose all their electrons, leaving a highly electrified collection of nuclei and free electrons.
PLEDGE/plɛdʒ/nounA deposit of personal property as security for a debt.
PLIGHT/plaɪt/nounA situation from which extrication is difficult especially an unpleasant or trying one.
POTENT/ˈpoʊtənt/adjHaving or wielding force or authority.
PRECOOK/ˈpriˈkʊk/verbCook beforehand so that the actual preparation won't take long.
PREDICAMENT/prɪˈdɪkəmənt/nounA situation from which extrication is difficult especially an unpleasant or trying one.
PREMEDITATE/priˈmɛdəˌteɪt/verbThink or reflect beforehand or in advance.
PREMIUM/ˈprimiəm/nounThe amount that something in scarce supply is valued above its nominal value.
PRESTIGE/prɛˈstiʒ/nounA high standing achieved through success or influence or wealth etc.
PROFOUND/proʊˈfaʊnd/adjShowing intellectual penetration or emotional depth.
PROSPEROUS/ˈprɑspɚəs/adjVery lively and profitable.
PRUDENT/ˈprudənt/adjCareful and sensible; marked by sound judgment.
PUNGENT/ˈpʌndʒənt/adjStrong and sharp.
PUTRID/ˈpjutrɪd/adjIn an advanced state of decomposition and having a foul odor.
QUIESCENT/kwaɪˈɛsənt/adjNot active or activated.
RACINESS/ˈreɪsinəs/nounA strong odor or taste property.
RAMIFY/ˈræməˌfaɪ/verbHave or develop complicating consequences.
RANCID/ˈrænsɪd/adjHaving a rank smell or taste usually due to a chemical change or decomposition.
REFLATE/riˈfleɪt/verbInflate again.
RENDEZVOUS/ˈrɑndɪˌvu/nounA place where people meet.
RESIDUAL/rɪˈzɪdʒuəl/adjRelating to or indicating a remainder.
RESTIVENESS/ˈrɛstɪvnəs/nounThe characteristic of being resistant of control, stubborn.
REVERENT/ˈrɛvɚənt/adjFeeling or showing profound respect or veneration.
RITUALISTIC/ˌrɪtʃuəˈlɪstɪk/adjOf or characterized by or adhering to ritualism.
ROMANTICIZE/roʊˈmæntəˌsaɪz/verbInterpret romantically.
ROOMINESS/ˈruminəs/nounIntellectual breadth.
RUBBERIZE/ˈrʌbɚˌaɪz/verbCoat or impregnate with rubber.
RUDIMENT/ˈrudɪmənt/nounThe remains of a body part that was functional at an earlier stage of life.
SATIRE/ˈsæˌtaɪɚ/nounWitty language used to convey insults or scorn.
SENSUAL/ˈsɛnʃəwəl/adjMarked by the appetites and passions of the body.
SEPTIC/ˈsɛptɪk/adjContaining or resulting from disease-causing organisms.
SERENE/sɚˈin/adjNot agitated; without losing self-possession.
SHIRR/ʃɝ/verbBake (eggs) in their shells until they are set.
SHREWD/ʃrud/adjMarked by practical hardheaded intelligence.
SLAPHAPPY/ˈslæpˌhæpi/adjDazed from or as if from repeated blows.
SONAR/ˈsoʊnɑr/nounA measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return.
SOVEREIGN/ˈsɑvrən/adjNot controlled by outside forces.
SPEECHIFY/ˈspitʃəˌfaɪ/verbMake speeches; hold forth, or harangue with a certain degree of formality.
SPERM/spɝm/nounThe male reproductive cell; the male gamete.
SPLINTERY/sˈplɪntɚi/adjResembling or consisting of or embedded with long slender fragments of (especially) wood having sharp points.
SPRIGGED/sprɪɡd/adjDecorated with designs of sprigs.
STAGNANT/ˈstæɡnənt/adjNot circulating or flowing.
STARK/stɑrk/adjDevoid of any qualifications or disguise or adornment.
STATUTE/ˈstætʃut/adjEnacted by a legislative body.
STORMINESS/ˈstɔrminɪs/nounThe state of being stormy.
STRANGULATE/sˈtræŋɡjəˌleɪt/verbKill by squeezing the throat of so as to cut off the air.
STULTIFY/ˈstʌltəˌfaɪ/verbProve to be of unsound mind or demonstrate someone's incompetence.
SUBDUE/səbˈdu/verbHold within limits and control.
SUBJECTIVE/səbˈdʒɛktɪv/adjTaking place within the mind and modified by individual bias.
SUBLIME/səˈblaɪm/verbChange or cause to change directly from a solid into a vapor without first melting.
SUBSTANTIAL/səbˈstænʃəl/adjOf considerable importance, size, or worth.
SUFFIX/ˈsʌfɪks/verbAttach a suffix to.
SUICIDAL/ˌsuəˈsaɪdəl/adjDangerous to yourself or your interests.
SUPPRESS/səˈprɛs/verbBring under control by force or authority.
SUPPRESSION/səˈprɛʃən/nounThe act of withholding or withdrawing some book or writing from publication or circulation.
SURGE/sɝdʒ/nounA sudden or abrupt strong increase.
SURPLUS/ˈsɝpləs/adjMore than is needed, desired, or required.
SUSTENANCE/ˈsʌstənəns/nounThe act of sustaining life by food or providing a means of subsistence.
SYNCOPATE/ˈsɪŋkəˌpeɪt/verbOmit a sound or letter in a word.
TABOO/tæˈbu/adjExcluded from use or mention.
TARIFF/ˈtɛrəf/verbCharge a tariff.
TECHNICALITY/ˌtɛknɪˈkælɪti/nounThe state of being technical as in the use of technical terms or methods.
TEDIOUS/ˈtidiəs/adjSo lacking in interest as to cause mental weariness.
TEMPEST/ˈtɛmpəst/nounA violent commotion or disturbance.
TEPID/ˈtɛpɪd/adjModerately warm.
THEOLOGY/θiˈɑlədʒi/nounThe learned profession acquired by specialized courses in religion (usually taught at a college or seminary).

Showing 200 of 218 words. Every meaning comes from Open English WordNet.

Questions

What makes a word count as hard vocabulary?

Length is not the test. A word lands on this list when its meaning is easy to misuse, its spelling is unpredictable, or it rarely comes up outside formal writing.

Is this an official hard vocabulary list?

No single official body publishes one fixed list of hard words. We choose ours from documented sources and keep adding to it, so treat it as a study list, not a ranked or complete one.

Can I practice these words in a game?

Yes. Use the play this list board to guess words drawn only from this page, with the same green, yellow and gray clues as Tile Streak's other boards.

Do you show how to pronounce each word?

Yes, next to the word, along with its part of speech, a plain meaning and an example sentence.

Who is this list for?

Anyone building a stronger everyday vocabulary: students prepping for an exam, adult learners, or a teacher who wants a ready-made list for a lesson.

How often does the list change?

We add words over time as we document new ones. Check back for the current set rather than saving a screenshot.