はいたい 廃退 LinksSentence search for 廃退Sentence search for はいたいSentence search for 廃頽Kanji details for 廃 and 退Edit in JMdict Noun, Suru verb, Intransitive verb1. (moral) decay; (social) decline; decadence; corruption; degeneration; deteriorationSee also 退廃Noun, Suru verb, Intransitive verb2. decline (in prosperity); falling into disuseOther forms廃頽 【はいたい】 Discussions Log in to talk about this word.