自し然ぜん消しょう滅めつ

noun, noun or participle which takes 'suru'

natural extinction; dying a natural death; coming to a natural end

Used for things disappearing or ending on their own without external intervention, such as species, traditions, or relationships fading away naturally.

• その希き少しょう種しゅは自し然ぜん消しょう滅めつの危き機きにある。

  The rare species is in danger of natural extinction.

• 彼かれらの交こう流りゅうは自し然ぜん消しょう滅めつした。

  Their interactions came to a natural end.

noun, noun or participle which takes 'suru'

ghosting; sudden unexplained end of communication

Modern colloquial use for abruptly cutting off all contact with someone, especially in dating or social media contexts.

• 彼かれ氏しに自し然ぜん消しょう滅めつされて、すごく傷きずついた。

  I was really hurt when my boyfriend ghosted me.

• マッチングアプリで自し然ぜん消しょう滅めつはよくあることだ。

  Ghosting is common on dating apps.