austere (adj.)
- abstemious
- abstinent
- anchoritic
- ascetic
- astringent
- authoritarian
- bald
- bare
- basic
- biting
- bitter
- bleak
- candid
- chaste
- common
- commonplace
- demanding
- direct
- dour
- dry
- dull
- dwarfish
- earnest
- elementary
- eremitic
- essential
- exacting
- exigent
- exiguous
- frank
- frugal
- fundamental
- grave
- grim
- hard
- harsh
- homely
- homespun
- homogeneous
- impoverished
- inclement
- indivisible
- irreducible
- jejune
- keen
- lean
- limited
- matter-of-fact
- meager
- mean
- mendicant
- mere
- meticulous
- miserly
- monolithic
- mortified
- narrow
- natural
- neat
- niggardly
- open
- paltry
- parsimonious
- plain
- poor
- primal
- primary
- prosaic
- prosy
- puny
- pure
- puritanical
- rough
- rugged
- rustic
- scant
- scanty
- scrawny
- scrimpy
- self-denying
- serious
- severe
- sharp
- simple
- single
- skimpy
- slender
- slight
- slim
- small
- sober
- somber
- spare
- sparing
- stark
- stern
- stingy
- stinted
- straightforward
- strict
- stringent
- stunted
- thin
- tough
- unadorned
- unaffected
- uncluttered
- undecorated
- undifferentiated
- unelaborate
- unembellished
- ungentle
- uniform
- unimaginative
- unornamented
- unsparing
- unvarnished
- watered
- watery