脇わきが甘あまい

expression, i-adjective

poor at preventing an underarm grip

Sumo term: describes a wrestler who is weak at defending against an opponent's underarm hold (脇).

• あの力りき士しは脇わきが甘あまいから、すぐに差さされてしまう。

  That sumo wrestler is weak at defending against an underarm grip, so he quickly gets his arm grabbed.

expression, i-adjective

having weak defenses; off guard; vulnerable

Idiomatic extension of the sumo term; used for people, teams, or systems that are easily exploited or caught unprepared.

• 彼かれは仕し事ごとはできるが、プライベートでは脇わきが甘あまいところがある。

  He's good at his job, but in his private life he can be off his guard.

• あのチームは守しゅ備びの脇わきが甘あまいから、そこを狙ねらおう。

  That team has weak defense, so let's target that.