too big for one's breeches vs stuck-up

too big for one's breeches and stuck-up both are adjectives.

Word	Noun	Adjective	Verb	Adverb
too big for one's breeches	No	Yes	No	No
stuck-up	No	Yes	No	No

As adjectives, too big for one's breeches and stuck-up are synonyms defined as:

too big for one's breeches and stuck-up: (used colloquially) overly conceited or arrogant

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

too big for one's breeches (adjective)	stuck-up (adjective)
(used colloquially) overly conceited or arrogant	(used colloquially) overly conceited or arrogant