pet·ty 
(pĕtē)
(pĕtē)adj. pet·ti·er, pet·ti·est
1. Of small importance; trivial: a petty grievance. See Synonyms at trivial.
2. Showing an excessive concern with unimportant matters or minor details, especially in a narrow-minded way: petty partisanship.
3.
a. Of lesser importance or rank; subordinate: a petty prince.
b. Law Variant of petit.
[Middle English peti, from Old French, variant of petit; see PETIT.]
petti·ly adv.
petti·ness n.