go off in WordNet English dictionary

1. run away; usually includes taking something or somebody along
   "The thief made off with our silver"; "the accountant absconded with the cash from the safe"
   abscond  bolt  absquatulate  decamp  run off  go off  make off 
   
2. happen in a particular manner
   "how did your talk go over?"
   go off  come off  go over 
   
3. go off or discharge
   "The gun fired"
   fire  discharge  go off 
   
4. be discharged or activated
   "the explosive devices went off"
   go off 
   
5. burst inward
   "The bottle imploded"
   implode  go off 
   
6. stop running, functioning, or operating
   "Our power went off during the hurricane"
   go off 
   

go off in English Wiktionary