on

Primary Meanings of on

1.
advadj
in a state required for something to function or be effective
in operation or operational
2.
adv
with a forward motion
3.
adj
(of events) planned or scheduled
Full Definitions of on
1

adv in a state required for something to function or be effective

“turn the lights on
“get a load on

adj in operation or operational

“left the oven on
“the switch is in the on position”
Synonyms:
connected
plugged in
Antonyms:
off
not in operation or operational
disconnected
not plugged in or connected to a power source
show more antonyms...
2

adv with a forward motion

“the circus traveled on to the next city”
“march on
Synonyms:
along

adv indicates continuity or persistence or concentration

“his spirit lives on
“shall I read on?”
3

adj (of events) planned or scheduled

“the picnic is on, rain or shine”
“we have nothing on for Friday night”
Antonyms:
cancelled, off
(of events) no longer planned or scheduled

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