改廃[kaihai] change
軍備撤廃[gunbiteppai] complete disarmament
公娼全廃[koushouzenpai] abolition of licensed prostitution
荒廃[kouhai] ruin
廃める[yameru] to stop

全廃[zenpai] total abolition
全廃論者[zenpaironsha] abolitionist
撤廃[teppai] annulment
廃る[sutaru] to go out of use
廃れる[sutareru] to go out of use

一進一退[isshinittai] now advancing and now retreating
引退[intai] retire
隠退[intai] retirement
隠退生活[intaiseikatsu] secluded life
遠退く[toonoku] to become distant

遠退ける[toonokeru] to keep (someone) at a distance
押し退ける[oshinokeru] to push aside
撃退[gekitai] repulse
減退[gentai] decline
後退[koutai] retreat

衰頽[suitai] decline
頽れる[sutareru] to go out of use
頽廃[taihai] degeneration
頽勢[taisei] one's declining fortunes
廃頽[haitai] decay

頽唐[taitou] decadence
頽齢[tairei] declining years
胡頽子[gumi] oleaster (any plant of genus Elaeagnus)
人倫頽廃[jinrintaihai] decline (decay, corruption) of ethical standards
風紀頽廃[fuukitaihai] decay (decline, corruption) of public morals