詰つめが甘あまい

expression, i-adjective

poor endgame; failing at the final stage; slacking off at the end

Idiomatic expression used when someone does well initially but makes careless mistakes or lets their guard down at the crucial final stage, leading to failure. Often used in business, sports, or games.

• 彼かれは仕し事ごとは速はやいけど、詰つめが甘あまいから最さい後ごにミスが多おおい。

  He works fast, but his endgame is weak, so he makes many mistakes at the end.

• 試し合あいはリードしていたのに、詰つめが甘あまくて逆ぎゃく転てん負まけした。

  We were leading in the match, but we slacked off at the end and lost by a comeback.