劣化
- 1deterioration (in quality, performance, etc.) ; degradation ; worsening Translated by Jiyomi
- 2(visible) aging ; becoming unattractive (due to aging)
noun (common) (futsuumeishi) · noun or participle which takes the aux. verb suru · intransitive verb
JMdict entry 1558420 · frequency rank 21. Source and licence.