astringent (n.)
astringent (adj.)
- acerb
- acerbic
- acid
- acidulous
- acrid
- acrimonious
- ascetic
- austere
- authoritarian
- biting
- bitter
- brisk
- caustic
- coarse
- collapsible
- compressible
- consumptive
- contractile
- cutting
- deflationary
- demanding
- double-edged
- dour
- edged
- exacting
- exigent
- fierce
- foldable
- grim
- hard
- harsh
- incisive
- inclement
- irritating
- keen
- meticulous
- mordacious
- mordant
- mortified
- penetrating
- piercing
- piquant
- poignant
- pungent
- restorative
- rigorous
- roborant
- rough
- rugged
- scathing
- severe
- sharp
- sour
- stabbing
- stern
- stinging
- strict
- strident
- stringent
- styptic
- tart
- tough
- trenchant
- ungentle
- unsparing
- vehement
- violent
- virulent
- vitriolic