trenchant

acerbic biting caustic incisive mordant penetrating pointed pungent salient unsparing

acid acidulous acute astringent clear clear-cut crisp critical crushing cutting distinct driving dynamic effective effectual emphatic energetic explicit forceful forcible graphic hurtful impressive intense keen piquant potent powerful razor-sharp salty sardonic sententious severe sharp significant strong tart to the point unequivocal vigorous weighty well-defined

bland blunt calm dull gentle kind mild nice soothing stupid

frivolous impotent weak