slow-witted vs half-witted

slow-witted and half-witted both are adjectives.

Word	Noun	Adjective	Verb	Adverb
slow-witted	No	Yes	No	No
half-witted	No	Yes	No	No

As adjectives, slow-witted and half-witted are synonyms defined as:

Other synonyms of slow-witted include backward, feebleminded.

slow-witted (adjective)	half-witted (adjective)
retarded in intellectual development	retarded in intellectual development