ふて腐れる

ふてくされる
to become sulky
to become irresponsible

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ふてくされる【ふて腐れる】

go into [have a fit of] the sulks; become sulky; become spiteful; 〔やけになる〕 become desperate; become irresponsible.

●彼は不公平な扱いを受けたと思い, 仕事もせずにふて腐れている. He refuses to work and sits around sulking because he feels he was unfairly treated.