| Adj. | 1. | on - in operation or operational; "left the oven on"; "the switch is in the on position"off - not in operation or operational; "the oven is off"; "the lights are off" | |
| 2. | on - (of events) planned or scheduled; "the picnic is on, rain or shine"; "we have nothing on for Friday night"cancelled, off - (of events) no longer planned or scheduled; "the wedding is definitely off" | |
| 3. | on - performing or scheduled for duties; "I'm on from five to midnight"; "Naval personnel on duty in Alaska"; "her on-duty hours were 11p.m. to 7 a.m."active - engaged in full-time work; "active duty"; "though past retirement age he is still active in his profession" | |
| Adv. | 1. | on - with a forward motion; "we drove along admiring the view"; "the horse trotted along at a steady pace"; "the circus traveled on to the next city"; "move along"; "march on" | |
| 2. | on - indicates continuity or persistence or concentration; "his spirit lives on"; "shall I read on?" | |
| 3. | on - in a state required for something to function or be effective; "turn the lights on"; "get a load on" | |