On-In | Commonly Confused Words
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In vs. On

In

/ɪn/
Used to indicate location or position within something

Examples:

She is in the kitchen.He sang in the school play.

Synonyms:

Antonyms:

On

/ɒn/
Indicating a position touching or in contact with the surface of a place or object

Examples:

The book is on the table.I have a meeting on Monday.

Synonyms:

Antonyms:

This word has no antonyms

Ways to tell them apart:

etymology
  • Remember on as being more about surfaces and contact, while in involves enclosure or being inside something.
  • If you think about the phrase on top, it represents being above a surface, whereas in would be embedded within something.
  • Use on when dealing with something that lies atop a flat or horizontal surface, such as on the table.
  • When you need to express being contained or surrounded by something, in is your word, like in the box.
  • On is often used for dates and days, as in on Monday, while in might describe longer periods, like in October.
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