ace, n.1. expert, master, proficient, adept, mavin, master hand, Chiefly Brit. Inf.
dab hand, Brit. Dial. dabster; maestro, virtuoso, talent, genius, prodigy, standout, Inf.wizard, Inf.whiz, U.S. SI.
crackerjack, SI.sharp, SI.shark; professional, Inf.pro, journeyman, veteran, past master, past mistress, old hand, old stager; specialist, authority, connoisseur; (both of martial arts)
black belt, dan.
2. excellent, first-rate, capital, Inf.tiptop, Inf.A-l, Inf.A number 1; exceptional, superior, standout, outstanding, striking; superlative, supreme, transcendent, sovereign, the best; matchless, peerless, nonpareil, perfect, sterling, classic, first-class; choice, prime, select, very good; fine, admirable, notable, noteworthy; remarkable, wonderful, marvelous, extraordinary.
3. masterful, masterly, proficient, expert; topflight, top drawer, Inf.topnotch, Inf.crack, U.S. SI.
crackerjack, SI.on the ball, Inf.whiz-bang, Brit. SI.
whizzo; finished, polished, accomplished, practiced; experienced. Fr. au fait,
professional, Inf.pro, veteran; adept, knowledgeable, skillful, talented, skilled, dextrous, adroit, deft, facile.
acerbate, v. 1. embitter, bitter, exacerbate, envenom, sour, gall, rankle, poison.
2. exasperate, discompose, distress, ruffle, roil, pique, chafe, vex, grate, put out, try [s.o.'s] patience, SI. drive [s.o.] nuts, SI.get [s.o.'s] goat; anger, incense, enrage, infuriate, madden, raise [s.o.'s] ire, make [s.o.'s] blood boil.
3. irritate, aggravate, annoy, fret, hector, bother, nettle, perturb, disturb; torment, provoke, plague, badger, pester, persecute, harass, get on [s.o.'s] nerves.
-adj. 4. embittered, bitter, galled, rankled, resentful; acrimonious, virulent, rancorous, acerbic, acerb.
5. angry, irate, incensed, Inf.mad, Inf.sore, SI.hot, SI.hot under the collar, SI.teed-off, SI.ticked-off; livid, enraged, infuriated, furious.
acerbity, n.1. (all of taste)
sourness, bitterness, tartness, acidity, acidness, acridity, acridness, acidulousness; pungency, sharpness, unsavoriness, roughness, harshness.
2. (all of expression or temperament)
acrimony, causticity, virulence, mordancy, trenchancy, astringen-cy, asperity, venomousness, acrimoniousness; irritability, irritableness, irascibility, irascibleness, petulance, Rare,
petulancy; short-temperedness, illtemperedness, testiness, edginess, touchiness, grouchiness, peevishness, crabbiness; snappishness, bearishness, currishness; brusqueness, gruffness, brashness, surliness; rudeness, churlishness, boorishness, gracelessness.
3. choler, rancor, spleen, ill humor, ill feeling, ill temper.
ache, v. 1. pain, throb, hurt, smart, gnaw, twinge, pinch; be in pain, suffer pain, be sore.
2. suffer, sorrow, grieve, mourn; be distressed, be anguished, be disquieted; feel for, pity, feel sympathy.
3. be eager, yearn, long, hanker, hanker for, pine for; crave, desire earnestly, wish ardently. -n. 4. dull pain, continued pain, soreness, hurt, suffering, smarting; throb, pang, twitch, twinge, spasm, pinch, gripe; distress, affliction, woe, misery; heartache, anguish, grief, sorrow, dolor.
5. longing, craving, yearning, hankering, pining for; uneasiness, anxiety, angst.
achievable, adj.attainable, reachable, within reach, accessible; realizable, obtainable, procurable, com-passable; accomplishable, doable, computable; practicable, workable, manageable, surmountable; reasonable, feasible, possible, conceivable, imaginable, thinkable, admissible; potential, likely, probable.