1.Definition: (used colloquially) overly conceited or arrogant

"They're snobs--stuck-up and uppity and persnickety"

Related Adjective(s):bigheaded, snooty, snotty, uppish

2.Definition: characterized by excessive precision and attention to trivial details

"A persnickety job", "A persnickety school teacher"

Related Adjective(s):pernickety