1. (psychology) of a conditioned response; caused to die out because of the absence or withdrawal of reinforcement
   "The extinguished behaviour no longer occurred after repeated lack of reward"

1. Put out, as of fires, flames, or lights
   "Too big to be extinguished at once, the forest fires at best could be contained";
   - snuff out, quench
    
2. Terminate, end, or take out
   "Socialism extinguished these archaic customs";
   - eliminate, get rid of, do away with
    
3. Kill in large numbers
   "the plague extinguished an entire population";
   - wipe out, decimate
    
4. Extinguish a cigarette or similar by placing or crushing the burning end against something
   "He extinguished the cigarette in the ashtray";
   - stub, stub out, press out
    
5. Put an end to; kill
   "The Nazis extinguished the life of many Jewish children";
   - snuff out [informal]

See also: destroyed

Type of: break, break off, cease, destroy, destruct, discontinue, give up, kill, lay off, quit, spifflicate [Brit, informal], spiflicate [Brit, informal], stop, surcease [archaic], uncreate [literary]

Encyclopedia: Extinguish