Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
pernickety is an adjective meaning "characterized by excessive precision and attention to trivial details". It carries one recorded sense.
characterized by excessive precision and attention to trivial details
“a persnickety job”
“a persnickety school teacher”
Definitions, synonyms and semantic relations for pernickety come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.