burst in on

idiom

Definition of burst in on

: to suddenly enter a room and interrupt (someone or something) They just burst in on us without even knocking on the door.

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“Burst in on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/burst%20in%20on. Accessed 18 Feb. 2020.

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