- come on
- come on1. Stop it!; Stop doing that. (Usually Come on!) •
Mary: Are you really going to sell your new car? Sally: Come on! How dumb do you think I am?
2. please oblige me. •Mother: Sorry. You can't go! Bill: Come on, let me go to the picnic!
•“Come on,” whined Jimmy, “I want some more!”
3. to hurry up; to follow someone. •If you don't come on, we'll miss the train.
4. [for electricity or some other device] to start operating. •After a while, the lights came on again.
•I hope the heat comes on soon.
5. to walk out and appear on stage. •You are to come on when you hear your cue.
6. Fig. [for a pain] to begin hurting; [for a disease] to attack someone. •The pain began to come on again, and Sally had to lie down.
7. [for a program] to be broadcast on radio or television. •The news didn't come on until an hour later.
* * *{v.} 1. To begin; appear. * /Rain came on toward morning./ * /He felt a cold coming on./ 2. To grow or do well; thrive. * /The wheat was coming on./ * /His business came on splendidly./ 3. or[come upon]. To meet accidentally; encounter; find. * /He came on an old friend that day when he visited his club./ * /He came upon an interesting idea in reading about the French Revolution./ Syn.: COME ACROSS, HAPPEN ON. 4. {informal} Let's get started; let's get going; don't delay; don't wait. - Used as a command. * /"Come on, or we'll he late," said Joe, but Lou still waited./ 5. {informal} Please do it! - Used in begging someone to do something. * /Sing us just one song, Jane, come on!/ * /Come on, Laura, you can tell me. I won't tell anybody./
Dictionary of American idioms. 2013.