See more synonyms for crackup on
  1. a crash; collision.
  2. a breakdown in health, especially a mental breakdown.
  3. collapse or disintegration: the crackup of an alliance.

Origin of crackup

First recorded in 1850–55; noun use of verb phrase crack up Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018