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Related to come apart: come apart at the seams
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1. To break, crumble, or disassemble into smaller pieces or components (unintentionally); to fall apart or come undone. The cookie was so soft that it just came apart in my hands. Hold that mechanism carefully so it doesn't come apart—it's a chore to assemble it.
2. To separate or disassemble into individual pieces. And when you're done with the clothing rack, it comes apart in three pieces for easy storage.
3. To be approaching failure. Boy, this party is really coming apart. First, there was the issue with the caterer, and now half the guests have canceled.
4. To become very emotional. Poor Jane really came apart during the funeral service. I can't watch those sappy movies because I just come apart every time.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
to break apart; to break up. The missile came apart in midair. I was afraid our car would come apart on that rough road.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. To be separated into parts; disintegrate; break apart: The roof of the old building is starting to come apart and needs to be replaced.
2. To be capable of being separated into parts: This picnic table comes apart into five pieces that easily fit in the car.
3. To begin to fail, especially by losing coherence or due to internal conflict: My schedule is getting so busy that my plan to visit Poland is coming apart. Halfway through the proposal, their arguments in favor of buying the house came apart.
4. To be suddenly unable to cope with negative emotions; have an emotional breakdown: When I heard the news about their death, I completely came apart.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.