persnickety vs bigheaded

persnickety and bigheaded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
persnickety	No	Yes	No	No
bigheaded	No	Yes	No	No

As adjectives, persnickety and bigheaded are synonyms defined as:

persnickety and bigheaded: (used colloquially) overly conceited or arrogant

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

persnickety (adjective)	bigheaded (adjective)
characterized by excessive precision and attention to trivial details	(used colloquially) overly conceited or arrogant
(used colloquially) overly conceited or arrogant