retarded (n.)
retarded (adj.)
- back
- backward
- behind
- behindhand
- belated
- blocked
- bridled
- burbling
- checked
- constrained
- controlled
- crackbrained
- cracked
- crazy
- cretinous
- curbed
- delayed
- guarded
- half-baked
- half-witted
- idiotic
- imbecile
- imbecilic
- impeded
- inhibited
- jammed
- late
- latish
- mongoloid
- moronic
- obstructed
- overdue
- pent-up
- restrained
- simple
- slow
- stopped
- subnormal
- tardy
- unpunctual
- unready
- untimely