expression, i-adjective
not knowing when to give up; being a bad loser
Describes someone who refuses to accept defeat or a bad outcome, often clinging stubbornly or making excuses. Commonly used in negative contexts.
彼は往生際が悪くて、負けを認めようとしなかった。
He was a bad loser and wouldn't admit defeat.
往生際が悪いのはみっともないよ。
It's unbecoming to not know when to give up.