snot-nosed vs persnickety

snot-nosed and persnickety both are adjectives.

Word	Noun	Adjective	Verb	Adverb
snot-nosed	No	Yes	No	No
persnickety	No	Yes	No	No

As adjectives, snot-nosed and persnickety are synonyms defined as:

snot-nosed and persnickety: (used colloquially) overly conceited or arrogant

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

snot-nosed (adjective)	persnickety (adjective)
dirty with nasal discharge	characterized by excessive precision and attention to trivial details
(used colloquially) overly conceited or arrogant	(used colloquially) overly conceited or arrogant