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Definitions

off the deep end

ADJECTIVE
imprudent
Synonyms
STRONGEST
careless foolhardy foolish ill-advised ill-considered irresponsible reckless thoughtless unwise
WEAK
brash heedless ill-judged impolitic improvident incautious inconsiderate indiscreet inexpedient injudicious leaving self wide open overhasty playing with fire rash temerarious unadvisable unthinking
Antonyms
STRONGEST
attentive careful cautious kind mindful prudent responsible sensible thoughtful wise
WEAK
discreet
ADJECTIVE
risky
Synonyms
STRONGEST
delicate dicey hazardous perilous precarious sensitive speculative treacherous tricky uncertain unhealthy unsafe unsound
WEAK
chancy endangered fraught with danger going for broke hairy hanging by a thread iffy insecure jeopardous long shot not a prayer on slippery ground on thin ice on-the-spot out on a limb playing with fire rocky ticklish touch-and-go touchy venturesome wicked wide-open
Antonyms
STRONGEST
certain definite harmless healthy honest insensitive protected safe secure stable strong sure well
WEAK
assured

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But in 1989 my finances went off the deep end.

From Salon • May 11, 2025

“People have problems, but you don’t expect them to go off the deep end like that,” Letarte said.

From Washington Times • Oct. 27, 2023

Last week, Vantage also sent customers waiting for refunds off the deep end when it experienced a security incident that knocked its site offline.

From Seattle Times • May 1, 2023

Her untimely death prompts a heartbroken Padraic to go off the deep end.

From Washington Post • Mar. 1, 2023

It didn’t kill, but it left Leo feeling like he’d just done a belly flop off the deep end.

From "The House of Hades" by Rick Riordan