source: I'm a Pretty Petty Person Aren't I? Anime_irl | Anime Meme on ME.ME

adjective (pettier, pettiest)

1. of little importance; trivial:

｟否定的に｠ 〖通例名詞の前で〗ささいな, 取るに足らない, 小さな〈問題･心配事など〉.

e.g. the petty divisions of party politics.

(of behavior) characterized by an undue concern for trivial matters, especially in a small-minded or spiteful way:

｟否定的に｠ ; 〖通例be ～〗 〈人のふるまいなどが〉卑しい, けちな, 心の狭い

e.g. he was prone to petty revenge on friends and family.

2. attributive of secondary or lesser importance, rank, or scale; minor:

〖名詞の前で〗(ほかと比べて)重要［重大］でない〈人･行為など〉, 下級の, 劣った

e.g. a petty official.

Law (of a crime) of lesser importance:

e.g. petty theft. Compare with grand.

pettily |ˈpedəlē| adverb

late Middle English (in the sense ‘small in size’): from a phonetic spelling of the pronunciation of French petit ‘small’. Compare with petit.