to go off the deep end

Examples

• All

• But after the whole pregnancy thing, he went off the deep end.

  Sarah's Choice (2009)

• Dad wept and said nobody liked the jigs, but it was no reason to go off the deep end.

  Fiction book (1994)

• I told you she went off the deep end.

  Deadware (2021)

• I mean he has to have gone off the deep end.

  Blog text (4)

• What makes him or her go off the deep end?

  Blog text (32)

• No wonder my dad's going off the deep end.

  The Grace Card (2011)

• Sometimes Priscilla goes off the deep end.

  Battle of the Sexes (2017)

• - The only thing I'm convinced of is that you've gone off the deep end.

  Eyes of a Stranger (1981)

• Mom flipped a page and said, "Your dad's gone off the deep end."

  Fiction book (1991)

• He went off the deep end after hearing the bad news, screaming and throwing things around.

Synonyms

L

to lose it

vsto go off the deep end

• Informal

289 7.5

Suddenly stop controlling your feelings and become very angry or upset

is broader, covering extreme irrational behaviour beyond anger or upset

F

to flip

vsto go off the deep end

• Informal

143 7.5

To suddenly become very angry, excited, or surprised

is similar but can include irrational actions beyond anger or excitement

G

to go berserk

vsto go off the deep end

• Informal

27 7.7

To become very angry and act out of control

is more general, including extreme emotional irrationality not only violent anger

G

to go off the rails

vsto go off the deep end

• Informal

19 7.3

To become chaotic and stop following a plan

is often used for projects and courses not just sudden personal emotional loss

G

to go out of one's mind

vsto go off the deep end

• Informal

14 7.3

To be unable to think clearly because you are very worried or upset

emphasizes intense anxiety or insanity rather than sudden uncontrolled emotional behaviour

F

to fly off

vsto go off the deep end

• Informal

7 5.3

To suddenly get very angry without warning

is similar but implies wider irrational or uncontrolled behaviour beyond anger

B

to boil over

vsto go off the deep end

• Informal

7 4.8

To suddenly lose control and show strong anger

is broader and covers extreme irrational actions not only anger outbursts

T

to take leave of one's senses

vsto go off the deep end

• Literature

3 8.8

Behave in a very foolish way without thinking clearly

is more about sudden extreme emotional loss rather than merely foolish acts

C

to come unhinged

vsto go off the deep end

• Informal

2 8.2

To lose control of your feelings and act very upset

focuses on mental instability rather than brief sudden extreme emotional loss of control

G

to go batshit

vsto go off the deep end

• Offensive

2 9.9

To become very angry and act in a wild, out of control way

is broader, not limited to anger or excitement and includes other extreme feelings

G

to go round the bend

vsto go off the deep end

• UK

1 8.6

To become so angry or stressed that you cannot think clearly

is about sudden extreme emotional actions rather than slow loss of sanity from stress

T

to trip out

vsto go off the deep end

• Informal

1 8.6

Become very upset or excited and act confused suddenly

is broader, meaning sudden extreme emotional or irrational behaviour beyond sensory effects

G

to go off on one

vsto go off the deep end

• UK

1 9.9

To suddenly get very angry and speak loudly for a long time

is broader, covering sudden irrational actions not only loud prolonged anger

L

to lose the run of oneself

vsto go off the deep end

• Archaic

9.9

Act in a confused or uncontrolled way because of strong emotion

is more sudden and extreme, not just confusion or temporary disorientation

T

to throw a wobbly

vsto go off the deep end

• UK

9.9

To become suddenly very angry and upset in a dramatic way

is similar but tends to be more extreme and include irrational actions

L

to lose one's yarbles

vsto go off the deep end

• Archaic

9.9

To start behaving in a strange and out of control way

is less slangy and focuses on sudden extreme emotional or irrational behaviour

Antonyms

C

to calm down

• Informal

594 1.4

To become less angry, excited, or upset

How Extreme

to go off the deep end

• Informal

15 8.1

to melt down

12 6.9

to lose it

• Informal

289 7.5

to upset

362 1.0

Surface Forms

Morphology

Etymology