come on

[come on] {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.: COMEA CROSS, 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 be 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.