impaired (adj.)
- adulterated
- aggravated
- blemished
- broken
- burned
- busted
- checked
- cracked
- crazed
- cut
- damaged
- defective
- deficient
- erroneous
- fallible
- faulty
- flawed
- harmed
- hurt
- immature
- imperfect
- imprecise
- impure
- inaccurate
- inadequate
- incomplete
- inexact
- injured
- irritated
- lacerated
- lacking
- makeshift
- mangled
- marred
- mediocre
- mixed
- mutilated
- off
- partial
- patchy
- rent
- scorched
- shattered
- short
- sketchy
- slashed
- smashed
- split
- spoiled
- sprung
- torn
- undeveloped
- uneven
- unfinished
- unsound
- wanting
- weakened
- worse
- worsened