weak point; weakness; shortcoming; flaw
General term for a vulnerable point, flaw, or shortcoming in a person, plan, system, or argument. Often used in contrast with 長所 (strong point).
See also: 短所
彼の弱点は優しすぎることだ。
His weakness is that he is too kind.
この計画にはいくつか弱点がある。
This plan has several weak points.
He overcame his weakness through repeated practice.
He exploited his opponent's weakness to gain the upper hand in the match.
The team brought in a new player to compensate for their weakness.
After years of friendship, I know his weak points well.
This system has a security weakness.
弱点 highlights a vulnerable or weak spot that could be exploited, while 難点 is more neutral, simply naming a troublesome feature.
弱点 refers to a weak point or vulnerability, often in ability or strategy, whereas 欠陥 more strongly implies an objective structural or functional flaw.