Invalidate - weaken, injure, destroy, overthrow.

Invective - censure, abuse, railing, reproach, satire.

Invent - feign, fabricate. frame, conceive, discover, devise.

Invest - enclose, surround, confer, adorn, array, endow, endue.

Investigation - search, inquiry, examination, scrutiny, research.

Inveterate - obstinate, confirmed, constant, fixed.

Invigorate - restore, strengthen, fortify.

Invincible - unyielding, unconquerable.

Involve - envelop, enwrap, entangle, implicate.

Irascible - irritable, hasty, fiery, hot, angry.

Ire - anger, temper, wrath, passion, resentment.

Irony - ridicule, sarcasm, satire, burlesque.

Irrational - unreasonable, foolish, absurd, silly.

Irrefragable - undeniable, indisputable, incontrovertible, unquestionable.

Irritate - plague, anger, tease, excite, provoke, aggravate, exasperate.

Irruption - opening, invasion, inroad, bursting forth.

Issue - offspring, progeny, result, end, sequel, egress, evacuation, effect, consequence.

J

Jade - harass, weary, tire, dispirit.

Jealousy - suspicion, envy.

Jest - fun, joke, sport.

Jocose - funny, witty, merry, jocular, pleasant, facetious, waggish.

Jocund - joyful, lively, merry, gay, sprightly, sportive, light-hearted, vivacious, mirthful.

Join - unite, add, combine, close, adhere, confederate league.

Joke - rally, sport. Jollity - hilarity, mirth, gayety, merriment, festivity, joviality.

Journey - travel, trip, voyage, tour.

Joy - happiness, delight, gladness, charm, rapture, ecstasy, felicity, exultation, pleasure, transport.

Judgment - sentence, decision, doom. opinion, discernment, discrimination, penetration, intelligence, sagacity.

Just - exact, accurate, correct, honest, barely, upright, righteous, equitable, incorrupt.

Justify - defend, excuse, clear, absolve, maintain.

Justness - exactness, correctness, accuracy, equity, propriety.

K

Keen - sharp, penetrating, acute, cutting, piercing, shrewd.

Keep - hold, detain, support, retain, maintain, guard, reserve, sustain.

Kind - indulgent, compassionate, tender, lenient, gentle, affable, courteous, benignant, bland.

Kind - sort, manner, class, race, species, way, genus.

Knowledge - understanding, perception, learning, erudition, skill, acquaintance.

L

Labor-toil, work, strive, exert, drudge.

Lament - sorrow, mourn, deplore, complain, bewail, grieve, regret.

Language - tongue, speech, dialect, idiom.

Languid - weary, weak, faint, exhausted, dull, drooping.

Large - comprehensive, capacious, extensive, big, great, huge.

Lassitude - prostration, languor, weariness, enervation, fatigue.

Last - latest, hindmost, ultimate, final, end.

Lasting - durable, continuous, forever, continual, permanent, perpetual, eternal.

Latent - unseen, hidden, secret.

Laudable - praiseworthy, commendable.

Laughable - droll, ridiculous, comical, mirthful.

Lavish - profuse, wasteful, extravagant.

Lazy - indolent, idle, slothful, inactive.

Lean - bend, incline, totter, waver.

Learning - intelligence, knowledge, erudition, science, literature, information.

Leave - abandon, desert, resign, relinquish, bequeath.

Legitimate - real, legal, lawful, genuine.

Lengthen - protract, extend, continue, draw out.

Lessen - diminish, decrease, abate, reduce, subside, shrink, degrade.

Let - allow, permit, suffer, leave, hire.

Lethargic - dull, tired, weary, heavy, drowsy, sleepy.

Level - even, smooth, plain, flat.

Levity - giddiness, gayety, fickleness, vanity, lightness.

Liable - exposed, responsible, subject.

Liberal - benevolent, generous, munificent, charitable.

Liberate - free, set free, deliver, release.

Liberty - freedom, permission, license, leave, exemption, privilege.

Lle - deception, untruth, fiction, fabrication, falsehood.

Life - being, energy, vitality, vivacity, briskness.

Lifeless - deceased, dead, inanimate, inactive, stale, flat, dull.

Lift - raise, elevate, exalt, hoist.

Light - illuminate, enlighten, nimble, kindle.

Like - probable, similar, uniform, resembling.

Likeness - resemblance, picture, portrait.

Liking - inclination, attachment, fondness, affection.

Linger - wait, delay, loiter, hesitate, saunter, tarry, lag.

Liquid - fluid, liquor. Listen - hearken, attend, hear, overhear.

Little - small, diminutive. Live - exist, subsist, dwell, abide, reside.

Lively - active, energetic, brisk, nimble, jocund, merry, sprightly, vigorous. Lodge - accommodate, entertain, shelter harbor. Loftiness - height, haughtiness, stateliness, elevation, dignity, pride. Loiter - lag, saunter, linger.

Lonely - dreary, lonesome, retired, solitary.

Look - see, behold, view, inspect, appearance.

Loose - unconnected, open, unrestrained, dissolute, licentious, unjointed.

Loss - injury, damage, detriment, waste.

Lot - share, portion, fate, fortune, destiny.

Loud - noisy, vociferous, clamorous, turbulent, vehement.

Love - liking, affection, fondness, kindness, attachment, adoration, esteem.

Lovely - attractive, amiable, elegant, charming, handsome, fine, delightful, beautiful.

Lover-beau, wooer, suitor.

Loving - kind, affectionate, attentive, tender, amorous.

Low - humble, mean, base, abject, debased, dejected, despicable.

Lower - humble, humiliate, debase, degrade.

Lucky - successful, fortunate, prosperous.

Ludicrous - amusing, comical, droll, laughable.

Lunacy - mania, derangement, insanity, madness.

Luxuriant - excessive, voluptuous, abundant, exuberant.

Luxury - profusion, abundance, excess.

M

Magnificent - noble, grand, sublime, glorious, splendid, superb.