undermine

C1
/ˌʌndəˈmaɪn/ /ˌʌndərˈmaɪn/

意味

verb
弱体化させる
to make something, especially somebody’s confidence or authority, gradually weaker or less effective
Our confidence in the team has been seriously undermined by their recent defeats.

実際の動画で undermine を覚える

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undermine の意味・発音・動画の実例 | LingoTube 辞書