Synonyms of go postal

verbTo become aggressive and erratic, especially due to stress; specifically, to carry out a shooting...

• run amokTo go on a rampage; to be in an uncontrollable rage.
• crash out
• Note: All terms are idiomatic unless stated otherwise.
• blow a fuseTo lose one's temper; to become enraged.
• blow a gasket
• blow one's stackSynonym of blow one's top.
• blow one's topTo become explosively angry; to lose one's temper.
• cut up nastyTo become angry; to make a fuss.
• cut up roughTo become angry; to make a fuss.
• do one's block AustraliaTo lose one's temper; to get angry.
• do one's nutTo become stridently angry, especially from worry.
• flip one's lidTo become explosively angry, to lose one's temper.
• flip one's wig
• flip out
• fly into a rageTo become very angry.
• fly off the handleTo become very angry or enraged; to throw a fit or go crazy.
• forget oneself
• get bent out of shape
• get one's back up
• get one's dander up
• get one's Irish up
• go ape
• go apeshit vulgarTo behave in an extreme manner; to act without restraint, especially by becoming explosively angry.
• go ballistic
• go bananas
• go bitchcakesTo go crazy; to get extremely angry; to flip out.
• go HAMTo enter an enraged and uncontrollable state; to go berserk.
• go H.A.M.
• go off
• go spare
• have a cow
• have a fit
• have kittens
• hit the roof
• hit the ceiling
• lose it
• lose one's coolTo become upset or disconcerted; to lose one's temper.
• lose one's marblesSynonym of lose one's mind (“to become crazy”).
• lose one's mind
• lose one's ragTo become angry.
• lose one's temperTo become angry or annoyed.
• lower the boom
• pitch a fitTo become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.
• pop one's cork
• shit a brick vulgarTo react strongly or excessively, especially in anger, fear, or astonishment.
• steam figuratively
• throw a fitTo become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.
• throw one's toys out of the pramTo lose one's temper; to throw a tantrum.
• vent one's gallTo openly express anger or frustration.
• get one's shirt out datedTo become angry or annoyed; to lose one's temper.
• teen obsolete
• wax wode obsolete