overachiever
英[???v?r?'t?i:v?(r)]
美[?o?v?r?'t?iv?(r)]
柯林斯高階英漢雙解學習詞典釋義
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VERB
（在學業或工作上）過于強求成功，過于爭強好勝
If someone overachieves in something such as school work or a job, they work very hard, especially in a way that makes them tired or unhappy. They want to be successful because it is very important to them to do well and not because they enjoy what they are doing.
例句
...emotions such as guilt, compulsion to please or overachieve, or depression.
諸如愧疚、沮喪、總想取悅于人和凡事爭強好勝等種種情緒
英英詞典釋義