accidentally on purpose

US /ˌæksɪˈdɛntəli ɒn ˈpɜrpəs/
UK /ˌæksɪˈdɛntəli ɒn ˈpɜrpəs/
"accidentally on purpose" picture
1.

假裝不小心, 故意地裝作偶然

doing something intentionally but making it seem like an accident

:
She accidentally on purpose spilled coffee on his new shirt.
假裝不小心把咖啡灑在他的新襯衫上。
He left the door unlocked accidentally on purpose, hoping she would come in.
假裝不小心沒鎖門,希望她能進來。