undermine的反義詞是：bolster。
undermine的意思是：逐漸削弱（信心、權威等）；使逐步減少效力；從根基處破壞；挖…的墻腳。第三人稱單數：undermines，現在分詞：undermining，過去式：undermined，過去分詞：undermined。
含有undermine的雙語例句
1、This may help to undermine the brittle truce that currently exists.
這也許會火上澆油，破壞當前脆弱不穩的休戰局面。
2、The continued fighting threatens to undermine efforts to negotiate an agreement.
持續的戰鬥會破壞希望通過談判來達成協議的努力。
3、Our confidence in the team has been seriously undermined by their recent defeats.
該隊最近的幾次失敗已嚴重動搖了我們對他們的信心。
4、The prosecution did its best to undermine the credibility of the witness.
原告竭力削弱證人的可信性。