Synonyms and related words :
acerb, acerbate, acerbic, acid, acidic, acidulent, acidulous, acrid, acrimonious, active, acute, aggressive, animated, apperceptive, appercipient, argute, astringent, astute, biting, bitter, brisk, canny, caustic, clear-cut, cogent, corroding, corrosive, critical, cutting, cynical, discerning, double-edged, driving, dynamic, edged, effective, energetic, enterprising, enthusiastic, escharotic, farseeing, farsighted, fierce, forceful, forcible, foreseeing, foresighted, forethoughted, forethoughtful, full of pep, go-go, gutsy, harsh, hearty, imperative, impetuous, impressive, intense, ironical, keen, kinetic, lively, living, longheaded, longsighted, lusty, mettlesome, mordacious, mordant, nervous, penetrating, peppy, perceptive, percipient, perspicacious, perspicuous, piercing, poignant, powerful, provident, punchy, rigorous, robust, rough, sagacious, sarcastic, sardonic, scathing, scorching, sensational, severe, sharp, shrewd, sinewed, sinewy, slashing, smacking, snappy, spanking, spirited, stabbing, stinging, strenuous, strident, striking, stringent, strong, take-charge, take-over, tart, telling, terse, trenchant, understanding, vehement, vibrant, vigorous, violent, virulent, vital, vitriolic, vivacious, vivid, withering, zestful, zesty, zippy