on

Used for surfaces, lines, and specific days/dates

Diagrams

ON - Simple IconSimple icon showing ON (surface contact)

**ON Preposition - Surface Relationships**Shows ON used for surfaces, contact, and support

**IN, ON, AT - Time Relationships**Shows how IN, ON, and AT are used for different time scales

**IN, ON, AT - Place Relationships**Shows the hierarchy: IN (enclosed) → ON (surface) → AT (point)

**IN-ON-AT Triangle Method**The Triangle Method: visual guide to understanding preposition hierarchy from general (IN) to specific (AT)

Common collocations

on time
on purpose
on display
on fire
on duty
on holiday
on sale
on television
on the way
on the other hand

Description

Used for surfaces, lines, and specific days/dates

ON primarily indicates surface contact - something resting upon and supported by a surface. For time expressions, ON is used with specific days and dates (days of the week, dates, special days). ON can also indicate the subject matter of something (a lecture ON economics). In British English, you'll commonly hear 'ON the weekend' (American English prefers 'IN the weekend'), and ON is used with public transport (ON the bus, ON the train).

Meanings

Touching a surface or supported by something
Specific days and dates
About a particular subject

Common Collocations

on time
on purpose
on display
on fire
on duty
on holiday
on sale
on television
on the way
on the other hand