それっきり

after that, from then on (no more)

s o̞ ɾ e̞ k̚ʲ kʲ i ɾʲ i → 其れっきり

それ that, it + っきり alone, by oneself

adverb Rare #35,369

after that, from then on (no more) Often implies that something did not happen again or continue.

JA: 彼とは一度会ったが、それっきり会っていない。

EN: I met him once, but I haven't seen him since.

And that was the last I ever saw of them.

— ファイト・クラブ (1999)

There’s been no word from them since then.

— サイコ (1960)

That was the last I ever heard of it.

— コーカサスの虜 (1996)

That was the end of my baseball career.

— フィールド・オブ・ドリームス (1989)

He ran off west with another woman, and that was the last anyone heard of him.

— グッバイ、レーニン！ (2003)