unconcerned bystander; someone who acts innocent
Meanings
2 senses · 5 examplesnoun
someone who has nothing to do with the matter; an unconcerned bystander
informalOften used to describe someone who is not involved in a particular trouble or event and thus appears detached.
They were arguing intensely, yet you stood by watching the excitement like a disinterested bystander.
Something went missing in the office, and everyone was questioned, but he acted like someone who had nothing to do with it.
noun
someone who pretends to be innocent or shows no sign of guilt or worry; someone who acts as if nothing happened
informalOften used disapprovingly to criticize someone who remains calm and unaffected after causing trouble or in a tense situation. The example from the source text belongs here.
He caused such a big mess, yet he acts as if nothing happened.
He was caught cheating on the exam, and he actually still chatted and laughed as if nothing were wrong.
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The project failed, and she is the person in charge, yet she always tries to act innocent.