1. Become suddenly very angry
   "The professor went ape when the student didn't know the answer to a very elementary question";
   - flip one's lid [N. Amer, informal], blow up [informal], throw a fit [informal], hit the roof [informal], hit the ceiling [informal], have a fit [informal], blow one's stack [N. Amer, informal], fly off the handle [informal], flip one's wig [US, informal], lose one's temper, blow a fuse [informal], go ballistic [informal], go mental [informal], blow a gasket [informal], go off the deep end [informal], blow one's top [informal]

Derived forms: gone ape, goes ape, went ape, going ape

Type of: rage

Encyclopedia: Go ape