doofus vs nitwit

doofus and nitwit both are nouns.

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

As nouns, doofus and nitwit are synonyms defined as:

Other synonyms of doofus include dimwit, half-wit.

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