Definitions
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preposition
Touching the top or surface of something and supported by it.
Examples
- The book is on the table.
- There is a picture on the wall.
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preposition
Used to show the day or date when something happens.
Examples
- We are leaving on Friday.
- Her birthday is on the fifth of May.
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adjective
Working or switched to a state where it is operating.
Examples
- All the lights are on, so they must be home.
- Leave the radio on while you are out.
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adjective
Happening or planned to happen.
Examples
- Is the party still on tonight?
- Some of the cast got sick, but the show is still on.
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adjective
Used to accept a challenge or an offer.
Examples
- Five dollars says our team wins tonight. You're on!
- If he wants a race, I'm on!
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adjective
Being worn or covering something.
Examples
- Your feet will soon warm up once your socks are on.
- Keep the lid on the pot.
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adjective
Facing the viewer from a certain side or direction.
Examples
- The photograph shows the car side on.
- The bus was coming head on.
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adjective
Acceptable or appropriate, usually used in the negative.
Examples
- It is not fair to do that. It's just not on.
- Shouting at children is not on.
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adjective
Possible to do.
Examples
- Climbing up that hill isn't on, so we'll find another way.
- Going out tonight just isn't on, because I have to work.
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adjective
Still available or not yet used.
Examples
- There are only a few tickets still on for the show.
- Is the offer still on?
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adjective
In baseball, standing on a base after hitting the ball.
Examples
- With two runners on, he hit a home run.
- The team left three runners on in the last inning.
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adjective
In cricket, on the same side of the field as the batter's legs.
Examples
- The captain moved two fielders to the on side.
- He hit the ball hard through the on side for four runs.