overthrow ： 指徹底擊敗對手，使其喪失力量和地位。
defeat ： 普通用詞，多指在戰爭、比賽、競選或辯論中戰勝對手，側重勝利的暫時性。
beat ： 口筆語均可用，可與defeat換用。
subdue ： 正式用詞，與conquer同義，但強調失敗后的臣服狀態;也可用作借喻，表克制、壓抑感情、欲望等。
例句：
1. Having identified the problem, the question arises of how to overcome it.
發現問題后，如何克服它的問題又出現了。
2. I would overcome any weakness, any despair, any fear.
我要克服所有的軟弱、絕望和恐懼。
3. With repeated applications of weedkiller, the weeds were overcome.
經過反復施用除草劑，雜草得以徹底根除。
4. These difficulties have been overcome without detriment to performance.
這些困難都已在不影響業績的情況下得到了克服。
5. He was then overcome by a terrible fit of coughing.
接著他便控制不住地劇烈咳嗽了一陣。