On – Meaning, Definition, Synonyms, and Antonyms
On is a common English preposition (and sometimes used as an adverb) that describes position, movement-related timing, or a state in which something is operating.
Meaning:
The word on usually indicates:
- Position or contact: something is touching a surface or located on it.
- Activation or operation: something is working or switched on.
- Time: something happens at a particular day or moment (often with a day of the week).
- Support/attachment: something is held in place or based on something.
Definition:
In general, on means “in or into a position that involves contact with a surface” or “in a functioning state,” and it can also mark the specific time when an event occurs.
Example Sentences:
- She placed the book on the table.
- The TV is on, so the room is bright.
- He will arrive on Thursday afternoon.
- Put the keys on the hook before you leave.
On Synonyms:
- Upon
- Atop
- Over
- Attached to
- In operation
- Switch on (state/operation)
- In session (for events/classes)
- In effect (for rules/decisions)
On Antonyms:
- Off
- Under
- Beneath
- Away from
- Outside
- Inactive
- Not operating
- Out of service
If you are comparing word meanings, you may also find related vocabulary helpful, such as about (useful for topics and subjects) and order (useful for sequences and arrangement).
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