razor sharp Synonyms

knife-edged stinging stabbing spiky smart shrewd sharp salient quick-witted quick strong trenchant whetted keen-edged ground fine unblunted sharpened pointy insightful finest knifelike wise pointed piercing perspicacious discerning cutting clever canny brilliant bright astute acute acrimonious edged fine finer perceptive penetrating lancinating keener keen intense intelligent incisive honed aciculate