come unglued

adjective

separated or detached; not glued.

Idioms

come unglued, Slang.

to become upset, disorganized, or confused; lose emotional control: to come unglued in an emergency.

to disintegrate or collapse; fall apart; break down: The negotiators tried to keep the fragile peace agreement from coming unglued.

Origin:
1685–95; (def 1) un-¹ + glued; (def 2) unglue + -ed²

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Etymonline

Word Origin & History

unglue

1548, from un- (2) + glue (v.). Unglued in fig. sense is recorded from 1922.

Online Etymology Dictionary, © 2010 Douglas Harper
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00:10

Come unglued is always a great word to know.

So is flibbertigibbet. Does it mean:

a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.

a chattering or flighty, light-headed person.

American Heritage

Idioms & Phrases

come unglued

Also, come unstuck. See come apart at the seams.

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Idioms & Phrases

un·glued