金輪際

こんりんざい

(not) ever; (not) at all; (not) on any account; (not) by any means

adverb

Example sentences

彼（かれ）は金輪際（こんりんざい）君（きみ）を助（たす）けてくれないだろう。

You can make book on it that he won't help you.