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English definition of “walk in on sb”

walk in on sb

verb uk phrasal verb with walk   /wɔːk/ us    /wɑːk/
to go into a room and see what someone is doing, when they did not want to be seen: She walked in on me when I was getting undressed.Surprising and shockingMaking people sad, shocked and upset
(Definition of walk in on sb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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