trenchant (adj.)
- acerb
- acerbic
- acid
- acidic
- acidulent
- acidulous
- acrid
- acrimonious
- active
- acute
- aggressive
- animated
- apperceptive
- astringent
- astute
- biting
- bitter
- brisk
- caustic
- clear-cut
- cogent
- corrosive
- crisp
- cutting
- discerning
- double-edged
- driving
- dynamic
- edged
- effective
- energetic
- enterprising
- enthusiastic
- farseeing
- farsighted
- fierce
- forceful
- forcible
- foresighted
- forethoughtful
- gutsy
- harsh
- hearty
- imperative
- impetuous
- impressive
- incisive
- intense
- irritating
- keen
- kinetic
- lively
- living
- longsighted
- lusty
- mettlesome
- mordacious
- mordant
- nervous
- penetrating
- peppy
- perceptive
- percipient
- perspicacious
- perspicuous
- piercing
- piquant
- poignant
- pointed
- powerful
- probing
- provident
- pungent
- rigorous
- robust
- rough
- sagacious
- salty
- sarcastic
- sardonic
- satiric
- scathing
- scorching
- sensational
- severe
- sharp
- sinewy
- slashing
- snappy
- sour
- spanking
- spirited
- stabbing
- stinging
- strenuous
- strident
- striking
- stringent
- strong
- tart
- telling
- understanding
- vehement
- vibrant
- vigorous
- violent
- virulent
- vital
- vitriolic
- vivacious
- vivid
- withering
- zestful
- zesty
- zippy
The trenchant blade, Toledo trusty,
For want of fighting was grown rusty,
And ate into itself, for lack
Of somebody to hew and hack.
