come on — Phrasal Verb with come /kʌm/ verb (past tense came, past participle come)
START › to start to happen or work: The heating comes on at six in the morning. I've got a cold coming on.
MAKE PROGRESS › to make progress: How's your new novel coming on?
Come on! informal › used to encourage someone to do something, to hurry, to try harder, etc: Come on! We're going to be late.
DISAGREEMENT › used to tell someone that you do not agree with them, do not believe them, etc: Come on Bob! You made the same excuse last week.