日本語WordNet
(informal) small and of little importance; "a fiddling sum of money"; "a footling gesture"; "our worries are lilliputian compared with those of countries that are at war"; "a little (or small) matter"; "a dispute over niggling details"; "limited to petty enterprises"; "piffling efforts"; "giving a police officer a free meal may be against the law, but it seems to be a picayune infraction"
contemptibly narrow in outlook; "petty little comments"; "disgusted with their small-minded pettiness"
JMdict
AIによる解説
Of little importance; trivial; characterized by an undue concern for small matters or by narrow-mindedness.
ライセンス: KeyLang Original
His petty jealousy ruined their friendship.
彼の狭量な嫉妬が彼らの友情を台無しにした。
He was promoted to Master Chief Petty Officer after demonstrating exceptional leadership.
彼は卓越したリーダーシップを示した後、特務曹長に昇進した。
The petty officer trained new recruits in navigation techniques.
その兵曹は新兵に航海技術を訓練した。
Pronunciation data from ipa-dict (MIT License) based on cmudict-ipa by @lingz