Walk in on
/wɔːk ɪn ɒn/B2
UpperIntermediate
1. To enter a room unexpectedly and catch someone doing something.
- I didn't mean to walk in on you while you were getting changed.
- She walked in on her parents having a serious conversation.
- He walked in on his colleagues while they were discussing the new project.
- I accidentally walked in on my roommate's Zoom meeting yesterday.
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