1. (superl.) Sharp; having a fine edge or point; as, a keen razor, or a razor with a keen edge.

2. (superl.) Acute of mind; sharp; penetrating; having or expressing mental acuteness; as, a man of keen understanding; a keen look; keen features.

3. (superl.) Bitter; piercing; acrimonious; cutting; stinging; severe; as, keen satire or sarcasm.

4. (superl.) Piercing; penetrating; cutting; sharp; -- applied to cold, wind, etc, ; as, a keen wind; the cold is very keen.

5. (superl.) Eager; vehement; fierce; as, a keen appetite.

6. (v. t.) To sharpen; to make cold.

7. (n.) A prolonged wail for a deceased person. Cf. Coranach.

8. (v. i.) To wail as a keener does.

Attic OK Siberian ablaze absorbing ace-high acerb acerbate acerbic acid acidic acidulent acidulous acrid acrimonious active acute adroit afire aggressive agile agog alacritous alert algid alive all agog animate animated anxious apt arctic ardent argute asperous astringent astute athirst attentive avid awake bad bang-up bark bawl bellow below zero bemoan bewail biting bitter bitterly cold blare blat bleak blubber boiling over bonzer boom boreal boss brainy bray breathe breathless bright brilliant brisk brumal buggy bugs bully burning bursting to but good buzz cackle canny cant caterwaul caustic chant chirp clever cold cold as charity cold as death cold as ice cold as marble coo cool cordial corking coronach corroding corrosive crackerjack crafty creak creaky crisp crow cry cunning cutting dandy dead march death knell death song deep deep-felt deepgoing delicious delirious deplore desirous detailed devoted devoted to dexterous dirge discerning discriminating discriminative distinct distressful distressing divine dolorous tirade double-edged drastic drawl droll drunk ducky dynamic eager ear-piercing earnest edged elegize elegy enamored of energetic enterprising enthusiastic epicedium escharotic eulogy excessive excited exclaim excruciating exorbitant exquisite extravagant extreme exuberant fab facetious featheredged febrile fervent fervid fevered feverish fierce fiery fine fine and dandy fired flaming flushed flute fond of forceful forcible forward freezing freezing cold frigid full of life full of pep funeral march funeral oration funeral song funny furious gasp gay gear gelid gifted give sorrow words glacial glorious glowing go-go graveside oration great grieve grievous groan groovy growl grunt gung ho harsh heartfelt hearty heated heavy hibernal hiemal hiss homefelt hot howl howling humorous humorsome hunky-dory hyperborean ice-cold ice-encrusted icelike icy immoderate impassioned impatient impetuous incisive inclement indelible intelligent intemperate intense intoxicated irritating itching jam-up jeremiad jesting jocose jocular joking joky joshing just dandy keen-edged keen-witted keening kinetic knell