Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
snotty-nosed is an adjective meaning "marked by casual disrespect". It carries one recorded sense.
marked by casual disrespect
“a flip answer to serious question”
“the student was kept in for impudent behavior”
Definitions, synonyms and semantic relations for snotty-nosed come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.