incisive (adj.)

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