noun, noun or participle which takes 'suru', intransitive verb
self-destruction; ruining oneself
Used for a person, group, or organization causing its own downfall through foolish actions or internal problems. Often used with する to mean 'to self-destruct'.
彼の無謀な計画は結局自滅に終わった。
His reckless plan ended in self-destruction.
内
The company self-destructed due to internal conflict.
noun, noun or participle which takes 'suru', intransitive verb
natural decay; perishing naturally
Rare, somewhat literary use for things dying out or decaying on their own, without external cause. More commonly expressed with 自然消滅 or 自然に滅びる in modern Japanese.
その古い風習は自滅した。
That old custom died out naturally.