noun
1. the state of being less than normal (especially with respect to intelligence)
• Derivationally related forms: ↑subnormal
• Hypernyms: ↑abnormality, ↑abnormalcy
2. lack of normal development of intellectual capacities
• Syn: ↑retardation, ↑mental retardation, ↑backwardness, ↑slowness
• Derivationally related forms: ↑subnormal, ↑slow (for: ↑slowness), ↑backward (for: ↑backwardness), ↑retard (for: ↑retardation)
• Hypernyms: ↑stupidity
• Hyponyms:
Useful english dictionary. 2012.