1
to become sulky;to become irresponsible (due to disgruntlement)
秀樹ったら、当事は全っ然こっちに慣れなくてね、しょっちゅうふてくされてたのよ。
Hideki, he really hadn't settled in here at all and sulked all the time.
Other forms
不貞腐れる 【ふてくされる】 (ateji (phonetic) reading)