退たい化かTop 25000MeaningsNounSuru verbIntransitive verb1. degeneration; retrogression; atrophy2. regression (e.g. of society); deterioration; degenerationKanji used退retreat化transformationPitch accentたいかたいかUsed in vocabulary退たい化か器き官かんvestigial organNoun退たい化か次じ数すうnullityNoun