Delayed in development or progress; historically used as a medical term but now considered offensive when referring to intellectual disabilities.
From Latin 'retardare' meaning 'to hinder, delay' (re- 'back' + tardus 'slow'). Originally a neutral medical and scientific term meaning 'slowed down' or 'delayed.' The clinical usage for intellectual disabilities emerged in the early 20th century but became stigmatized through misuse and is now considered highly offensive.
This word exemplifies how clinical terminology can become weaponized through social misuse, forcing the medical community to repeatedly adopt new terms as old ones become slurs. The euphemism treadmill shows how prejudice can corrupt even the most neutral scientific language, leading to continuous vocabulary evolution in sensitive fields.
Complete word intelligence in one call. Free tier — 50 lookups/day.