[n] (informal) something causing excitement or stimulating interest
[v] become hostile towards; "The dog suddenly turned on the mailman"
[v] get high, stoned, or drugged; "He trips every weekend"
[v] stimulate sexually; "This movie usually arouses the male audience"
[v] cause to operate by flipping a switch; "switch on the light"; "turn on the stereo"
[v] cause to be agitated, excited, or roused; "The speaker charged up the crowd with his inflammatory remarks"
[v] produce suddenly or automatically; "Turn on the charm"; "turn on the waterworks"
[v] be contingent on; "The outcomes rides on the results of the electin"; "Your grade will depends on your homework"
agitate, arouse, charge, charge up, commove, depend on, depend upon, devolve on, excite, get off, hinge on, hinge upon, ride, rouse, sex, switch on, trip, trip out, wind up
calm, calm down, cut, lull, quiet, quieten, still, switch off, tranquilize, tranquillise, tranquillize, turn off, turn out