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1. To flow out of something suddenly or with great force, as of a liquid. Water is bursting out of this pipe, and I can't get it to stop!
2. To leave a place suddenly or energetically. After our argument, Caitlin burst out of the room in a huff. The kids burst out of school cheering on the last day before summer vacation.
3. To suddenly perform a particular action. My mother was fine this morning, but she burst out crying at the funeral.
4. To pop out of something, often clothes that are too small. I'm sorry, but that top just doesn't fit you—you're practically bursting out of it!
5. To speak loudly and abruptly. I couldn't even finish telling my story before my mom burst out in opposition.
burst out (of something)
Fig. to seem to explode out of something; to become [suddenly] too big for something, such as clothes, a house, etc. She is practically bursting out of her dress. The butterfly burst out of the chrysalis.
(of some place) to come out of a place very rapidly, like an explosion. Everyone burst out of the burning building. Suddenly, the windows all burst out.
burst out doing something
to begin to do something suddenly, such as cry, laugh, shout, etc. Suddenly, she burst out singing. Ted burst out laughing when he read the joke.
see under burst into.
1. To explode outward: The container was under so much pressure that it burst out.
2. To leave some place suddenly and forcefully: The doors from the bar opened and the crowd burst out. After school, the children burst out onto the playground.
3. To say something suddenly and loudly: The defendant burst out at the lawyers from the witness stand.
4. To start doing something suddenly: At the end of my story, everyone burst out laughing. The children burst out in song.