Etymology
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persnickety (adj.)

1889, alteration of pernickety (q.v.).

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Definitions of persnickety

persnickety (adj.)
(used colloquially) overly conceited or arrogant; "a snotty little scion of a degenerate family"-Laurent Le Sage;
they're snobs--stuck-up and uppity and persnickety
Synonyms: bigheaded / snooty / snot-nosed / snotty / stuck-up / too big for one's breeches / uppish
persnickety (adj.)
characterized by excessive precision and attention to trivial details;
a persnickety school teacher
a persnickety job
Synonyms: pernickety
From wordnet.princeton.edu