keen, a. sharp, acute, trenchant; penetrating, shrewd, astute, discerning; piercing, poignant, excruciating, a crimonious, mordacious, bitter, intense, severe; eager, ardent, ravenous, vehement.

keep, n. custody, charge; maintenance, support; stronghold, donjon; condition, case.

keep, v. detain, restrain, hold, retain, repress, withhold; preserve, conserve; maintain, continue; guard, shield, defend, protect, screen, preserve; entertain, harbor; observe, adhere to, fulfill; commemorate, celebrate, solemnize; support, sustain, provide for.

keep back. reserve, withhold; restrain, repress, check.

keep company with. associate with, accompany, go with.

keep down. hold in subjection, restrain, hinder, subdue.

keeper, n. warden; superintendent, curator, custodian, guardian, attendant, defender, overseer.

keep from. abstain from, refrain from.

keeping, n. holding, restraint, custody, guard, guardianship, protection, tutelage; detention, retention; maintenance support, subsistence, board; conformity, congruity, harmony, consistency, correspondence; observance; celebration, commemoration, fulfillment.

keeping back. reservation, reserving, withholding; restraint, repression, checking.

keep on. proceed, continue, persist.

keepsake, n. memento, souvenir.

keep to. adhere to.

keep under. hold in subjection, subdue, mortify.

keep up. maintain, continue.

kelter, n. (Colloq.) condition, order.

kernel, n. seed, grain; nucleus; gist, core, pith, substance, essence, marrow.  Associated Words:  enucleate, enucleation, exacinate, exacination.

kerosene, n. coal oil, petroleum.

kettle, n. caldron (a large kettle).

kettledrum, n. tympano; pl. tympani.

key, n.  Associated Words:  claviger, clavigerous, cleidomancy, escutcheon, lock.

key, n. pitch, tone.

key, n. clew, solution, guide, explanation, elucidation, clavis; wharf, quay; forelock, cotter, bar, pin; samara.

keyboard, n. clavier.

kick, v. spurn, calcitrate, recalcitrate, winch; resist, oppose; recoil.

kick, n. kicking, opposition.

kicking, n. spurning, recalcitration, calcitration, winch; opposition, resistance.

kicking, a. recalcitrant, calcitrant, resistant.

kiddy, v. (Slang) deceive, outwit, hoax.

kidnap, v. abduct.

kidnapper, n. abductor, man-stealer.

kidnapping, n. abduction.

kidney, n.  Associated Words:  nephrology, nephrotomy, nephritis, renal, emunctory, nephritic, loins, reins.

kidney, n. sort, kind, variety, disposition.

kidney-shaped, a. reniform.

kidney stone. nephrite, jade.

kill, v. slay, slaughter, murder, assassinate, butcher, despatch, execute, lynch, massacre, burke, immolate, guillotine, decimate, destroy, blast; counteract, neutralize; quell, extinguish.