Phrase guide

off the deep end

adj · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 1

Extremely angry.

Definition source: English Wiktionary via Wiktextract

Qualifier: usually in the phrase 'go off the deep end'

Examples

  • I told him that I'd broken the vase, and he went off the deep end.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Crazy, erratic, or irrational.

Definition source: English Wiktionary via Wiktextract

Usage: US, idiomatic

Examples

  • It used to be a funny comic, but lately it has gone off the deep end.

Meaning relationships

Synonyms: 5150, bananas, barking, barking mad, buggish, buggy, bughouse, barmy, batchy, batpoop, bats, batty, bonkers, bread baskets, cracked, crackers, cra-cra, cray, cray-cray, crazed, crazy, crazy as a bedbug, crazy as a cootie, crazy as a cootie bug, crazy as a pet coon, cuckoo, daffy, daft, demented, deranged, distraught, disturbed, doolally, dotty, eccentric, fruit loops, gaga, hatstand, harebrained, insane, kooky, loon, loco, loony, loony tunes, loopy, lunatic, mad, mental, mentally ill, meshigener, meshugge, moonsick, nerts, non compos mentis, nonsane, nucking futs, nut job, nutballs, nut, nuts, nutso, nutty, nutter, off the beam, off the chain, over the edge, potty, psycho, psychoceramic, psychotic, sicko, screwy, squirrelly, starkers, tonto, unbalanced, unsane, wackadoodle, weird, whackjob, whacko, whacky, wode, yampy, zany, apeshit, batcrap, batshit, bat-shit, fucked in the head, fucked up, ripshit

Antonyms: none provided

History

Etymology

No etymology was provided for this word.