doofus vs dimwit

doofus and dimwit both are nouns.

Word	Noun	Adjective	Verb	Adverb
doofus	Yes	No	No	No
dimwit	Yes	No	No	No

As nouns, doofus and dimwit are synonyms defined as:

Other synonyms of doofus include half-wit, nitwit.

doofus (noun)	dimwit (noun)
a stupid incompetent person	a stupid incompetent person