bigheaded vs stuck-up

bigheaded and stuck-up both are adjectives.

Word	Noun	Adjective	Verb	Adverb
bigheaded	No	Yes	No	No
stuck-up	No	Yes	No	No

As adjectives, bigheaded and stuck-up are synonyms defined as:

bigheaded and stuck-up: (used colloquially) overly conceited or arrogant

Other synonyms of bigheaded include persnickety, snooty, snot-nosed, snotty, too big for one's breeches, uppish.

bigheaded (adjective)	stuck-up (adjective)
(used colloquially) overly conceited or arrogant	(used colloquially) overly conceited or arrogant