(of a person or their manner)childishly sulky or bad-tempered
(人或其举止)任性的;脾气坏的
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he was moody and petulant 他喜怒无常,任性乖戾
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a petulant shake of the head .任性地一摇头。
"late 16th cent. (in the sense ‘immodest’): from French