kerflooey

/kərˈfluːi/
adverb
  1. In a state of breakdown, failure, or collapse (used informally, often after 'go').
    • All our vacation plans went kerflooey when the flight was canceled.
    • The engine went kerflooey in the middle of the highway.
    • My computer went kerflooey right before the deadline.
Antonyms
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