- Wanting in something; incomplete; lacking a part;
deficient; imperfect; faulty; -- applied either to natural or moral
qualities; as, a defective limb; defective timber; a defective copy or
account; a defective character; defective rules. - Lacking some of the usual forms of declension or
conjugation; as, a defective noun or verb.
Meaning of 'defective' (Princeton's WordNet)
1 . defective
[ s]
Meaning (1): - not working properly
Example in sentence:
a bad telephone connection;
a defective appliance
Meaning (2): - markedly subnormal in structure or function or intelligence or behavior
Mental defective Mental defective is a vague general term used to describe a person who is considered to have insufficient mental development to cope with everyday life and needs special care.