on: meaning, definition, pronunciation and examples
A1 (Highest Frequency)Neutral (Used in all registers, from highly informal to formal)
Quick answer
What does “on” mean?
Functioning as a preposition, particle, or adverb to indicate position in contact with and supported by the top surface of something.
Audio
Pronunciation
Definition
Meaning and Definition
Functioning as a preposition, particle, or adverb to indicate position in contact with and supported by the top surface of something; indicating that something is operating or functioning; indicating a source or means.
Extends to concepts of continuation (on and on), activation/operation (turn on the light), obligation/duty (on call), topic (a book on birds), means of transport (on the bus), a specific day/time (on Monday), membership (on the team), and state/condition (on sale, on fire).
Dialectal Variation
British vs American Usage
Differences
Minor differences: British English uses "at the weekend" where American English uses "on the weekend." In transport, BrE says "on a train/plane/bus" but may also use "in a car"; AmE follows a similar pattern. BrE is more likely to omit "on" before days in casual speech ("I'll see you Monday"), which is also common but slightly more informal in AmE.
Connotations
Generally identical. In financial contexts, 'on' can imply obligation in both (a tax on income).
Frequency
Extremely high and identical in frequency in both dialects.
Grammar
How to Use “on” in a Sentence
[NP] + be + on + [NP] (The book is on the table)[V] + on + [NP] (He insisted on the point)[V] + [NP] + on + [NP] (She put the blame on me)[V] + [Particle] 'on' (Keep on working)Vocabulary
Collocations
Examples
Examples of “on” in a Sentence
verb
British English
- (Slang) To criticise or reprimand someone. "The boss really went on him for the mistake."
- (In phrasal verbs) "They decided to press on with the plan despite the weather."
American English
- (Slang) To be performing well. "The band was really on last night!"
- (In phrasal verbs) "We need to move on to the next agenda item."
adverb
British English
- Continuing. "He droned on for hours."
- In position, attached. "Make sure the lid is on tightly."
American English
- Moving forward. "We traveled on toward the city."
- In operation. "Leave the radio on, please."
adjective
British English
- (Of an electrical device) functioning. "Is the heating on?"
- Taking place as planned. "Is the party still on for tonight?"
American English
- (Of an event) happening. "The deal is on!"
- Aware, fashionable. "He's just not on with the latest trends."
Usage
Meaning in Context
Business
"The report is on your desk." "We are on schedule." "The meeting is on Tuesday." "Our strategy is based on market data."
Academic
"His thesis focuses on quantum mechanics." "The experiment relies on precise measurements." "See the diagram on page 47."
Everyday
"Your keys are on the counter." "The film is on TV tonight." "I'm on my way." "Switch the light on."
Technical
"The server is now on and operational." "The protocol runs on a secure channel." "Apply pressure on the valve."
Watch out
Common Mistakes When Using “on”
- Using 'in' instead of 'on' for surfaces (The picture is in the wall).
- Using 'at' instead of 'on' for specific days (I'll see you at Monday).
- Using 'on' instead of 'in' for enclosed spaces (She is on the car vs. in the car).
- Omitting 'on' after 'depend' (It depends the weather).
FAQ
Frequently Asked Questions
Use 'on' for days and dates (on Monday, on July 4th). Use 'in' for longer periods like months, years, and seasons (in May, in 2023, in winter). Use 'at' for precise times (at 3 o'clock, at noon).
No, that is its core meaning, but it is highly extensible. It is used for abstract 'surfaces' like topics (a talk on finance), states (on fire, on sale), media (on TV, on the radio), and in phrasal verbs (get on, go on).
Both are correct with a slight nuance. British English often uses 'in the street' (location within the road space). American English strongly prefers 'on the street' for location. Both use 'on' for the idea of living/happening there (life on the streets, a shop on Main Street).
The general rule uses 'on' for large vehicles where you can stand and walk around (bus, train, plane, ship) and 'in' for smaller, personal vehicles where you sit inside (car, taxi, truck cab). It relates to the conceptualisation of the space.
Functioning as a preposition, particle, or adverb to indicate position in contact with and supported by the top surface of something.
On is usually neutral (used in all registers, from highly informal to formal) in register.
On: in British English it is pronounced /ɒn/, and in American English it is pronounced /ɑːn/ or /ɔːn/ (regional variations exist; /ɑːn/ is common in General American). Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “on the ball”
- “on cloud nine”
- “on the fence”
- “on the house”
- “on thin ice”
- “on the dot”
- “on and off”
- “on the go”
Learning
Memory Aids
Mnemonic
Think of a light switch: ON means active and in contact with the electrical circuit. The word 'ON' itself is short and looks like it's sitting 'on' the line of text.
Conceptual Metaphor
CONTACT IS CONTROL/SUPPORT (have an effect on); ACTIVE IS ON (the computer is on); A TOPIC IS A SURFACE (a book on birds).
Practice
Quiz
Which sentence uses 'on' INCORRECTLY?