Synonyms for Go mental:

• v.

  •go crazy (verb)
  • blow one's stack,
  • go off,
  • wig out,
  • crack up,
  • lose one's mind,
  • freak out.

• Other synonyms:

  •Other relevant words:
  • lose it,
  • flip out,
  • flip one's lid,
  • fly off the handle,
  • go ballistic,
  • go crazy,
  • go haywire,
  • blow a gasket,
  • go berserk,
  • go nuts,
  • go off the deep end,
  • blow mind,
  • blow one's mind,
  • blow one's top,
  • blowing a gasket,
  • blowing one's top,
  • go bananas,
  • go bonkers,
  • go off deep end,
  • go off rocker,
  • going off deep end,
  • lost it,
  • go batty,
  • go buggy,
  • go cuckoo,
  • go daffy,
  • go kooky,
  • go loco,
  • go loony,
  • go nutty,
  • go off one's rocker,
  • go off the wall,
  • go psycho,
  • go wacko,
  • go wacky,
  • lose control of oneself,
  • lose one's cool,
  • going berserk.