tell against

• 对…不利；有碍…的成功；成为对…不利的证据：

  Your carelessness will tell against you in the examination.

  你的粗心在考试中会对你不利的。

  This scandal is bound to tell against him in the coming presidential election.

  在即将到来的总统竞选中这一丑闻必然对他不利。