subnormal

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a person of less than normal intelligence
• Hypernyms:
simpleton, simple

II - adjective

below normal or average
- after the floods the harvests were subnormal
- subnormal intelligence
• Similar to:
abnormal, unnatural
• Derivationally related forms:
subnormality
• Topics:
statistics