adjective |
1. Being in operation: The television is on. |
2. Under or behaving as if under observation: A minister is always on. |
3. Informal Functioning or performing at a high degree of competence or energy: The goalie is really on. |
4. Planned; intended: We have nothing much on for this weekend. |
5. Happening; taking place: The parade is on. |
6. Baseball Having reached base safely; on base: Two runners are on. |
|
adverb |
1. In or into a position or condition of being supported by or in contact with something: Put the coffee on. |
2. In or into a position of being attached to or covering something: Put your clothes on. |
3. In the direction of something: He looked on while the ship docked. |
4. Toward or at a point lying ahead in space or time; forward: The play moved on to the next city. |
5. In a continuous course: He worked on quietly. |
6. In or into performance or operation: Turn on the radio. |
7. In progress or action; in a state of activity: The show must go on. |
8. In or at the present position or condition: stay on; hang on. |
9. In a condition of being scheduled for or decided upon: There is a party on tonight. |
|
idiom |
1. on and off Intermittently. |
2. on and on Without stopping; continuously. |
|
preposition |
1. Used to indicate position above and supported by or in contact with: The vase is on the table. We rested on our hands and knees. |
2. Used to indicate contact with or extent over (a surface) regardless of position: a picture on the wall; a rash on my back. |
3. Used to indicate location at or along: the pasture on the south side of the river; a house on the highway. |
4. Used to indicate proximity: a town on the border. |
5. Used to indicate attachment to or suspension from: beads on a string. |
6. Used to indicate figurative or abstract position: on the young side, but experienced; on her third beer; stopped on chapter two. |
7. Used to indicate actual motion toward, against, or onto: jumped on the table; the march on Washington. |
8. Used to indicate occurrence at a given time: on July third; every hour on the hour. |
9. Used to indicate the particular occasion or circumstance: On entering the room, she saw him. |
10. Used to indicate the object affected by actual, perceptible action: The spotlight fell on the actress. He knocked on the door. |
11. Used to indicate the object affected by a figurative action: Have pity on them. |
12. Used to indicate the object of an action directed, tending, or moving against it: an attack on the fortress. |
13. Used to indicate the object of perception or thought: gazed on the vista; meditated on his actions. |
14. Used to indicate the agent or agency of a specified action: cut his foot on the broken glass; talked on the telephone. |
15. Used to indicate a medicine or other corrective taken or undertaken routinely: went on a strict diet. |
16. Used to indicate a substance that is the cause of an addiction, a habit, or an altered state of consciousness: high on dope. |
17. Used to indicate a source or basis: "We will reach our judgments not on intentions or on promises but on deeds and on results” ( Margaret Thatcher). |
18. Used to indicate a source of power or energy: The car runs on methane. |
19. Used to indicate the state or process of: on leave; on fire; on the way. |
20. Used to indicate the purpose of: travel on business. |
21. Used to indicate a means of conveyance: ride on a train. |
22. Used to indicate availability by means of: beer on tap; a physician on call. |
23. Used to indicate belonging to: a nurse on the hospital staff. |
24. Used to indicate addition or repetition: heaped error on error. |
25. Concerning; about: a book on astronomy. |
26. Concerning and to the disadvantage of: We have some evidence on him. |
27. At the expense of; compliments of: drinks on the house. |
|