たいはい 退廃 Common word LinksSentence search for 退廃Sentence search for たいはいSentence search for 頽廃Kanji details for 退 and 廃Edit in JMdict Noun, Suru verb, Intransitive verb1. (moral) decay; (social) decline; decadence; corruption; degeneration; deteriorationNoun, Suru verb, Intransitive verb2. decline (in prosperity)Other forms頽廃 【たいはい】 Discussions Log in to talk about this word.