subnormal

• POS: Adjective, Noun
• HYPHEN: sub=nor=mal

CIDE DICTIONARY

subnormal, n. 

 That part of the axis of a curved line which is intercepted between the ordinate and the normal.  [1913 Webster]

OXFORD DICTIONARY

subnormal, adj.
1 (esp. as regards intelligence) below normal.
2 less than normal.

Derivative

subnormality n.

THESAURUS

subnormal

aberrant, abnormal, amorphous, anomalistic, anomalous, arrested, babbling, backward, blithering, burbling, crackbrained, cracked, crazy, cretinistic, cretinous, deviative, different, dithering, divergent, driveling, drooling, eccentric, erratic, formless, half-baked, half-witted, heteroclite, heteromorphic, idiotic, imbecile, imbecilic, irregular, low, maundering, mentally defective, mentally deficient, mentally handicapped, mentally retarded, mongoloid, moronic, not all there, retarded, shapeless, simple, simpleminded, simpletonian, slobbering, stray, straying, subpar, unnatural, wandering