accidentally
adverb uk/ˌæk.sɪˈden.təl.i/ us/ˌæk.səˈden.t̬əl.i/
B1 偶然地；意外地
by chance or by mistake
I accidentally knocked a glass over. 我不小心打翻了一个杯子。
Idiom
accidentally on purposeidiom 明明故意却装出无心的样子；假装不是故意地
If you do something accidentally on purpose, you do it intentionally but pretend it happened by chance.
I've never liked these glasses of Peter's. I might drop them one day - accidentally on purpose. 我从来就不喜欢彼得的这副眼镜，或许什么时候我会假装无意把它给摔了。