Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun subnormal

1 sense of subnormal

Sense 1
subnormal -- (a person of less than normal intelligence)
       => simpleton, simple -- (a person lacking intelligence or common sense)

Antonyms of adj subnormal

1 sense of subnormal

Sense 1
subnormal -- (below normal or average; "after the floods the harvests were subnormal"; "subnormal intelligence")

INDIRECT (VIA abnormal) -> normal -- (conforming with or constituting a norm or standard or level or type or social norm; not abnormal; "serve wine at normal room temperature"; "normal diplomatic relations"; "normal working hours"; "normal word order"; "normal curiosity"; "the normal course of events")

Similarity of adj subnormal

1 sense of subnormal

Sense 1
subnormal -- (below normal or average; "after the floods the harvests were subnormal"; "subnormal intelligence")
       => abnormal (vs. normal), unnatural -- (not normal; not typical or usual or regular or conforming to a norm; "abnormal powers of concentration"; "abnormal amounts of rain"; "abnormal circumstances"; "an abnormal interest in food")