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(a) weakness; shortcoming; failing; sore point
弱みを握られると動けない。
If someone has a hold on your weakness, you can't move.
彼女の唯一の弱みは気が小さいことだ。
Her only weakness is being faint-hearted.
交渉では相手の弱みを把握しておくことが有利に働く場合がある。
In negotiations, knowing the other party's weaknesses can work in your favor.