Definition of you're on in English:

you're on

phrase

informal
  • Said by way of accepting a challenge or bet.

    • ‘Make it £5 and you're on.’
    • ‘You're on. You come up with a good enough prize for me to win, and I'll be happy to take your bet.’
    • ‘I think about it for a moment and I tell him ‘OK, you're on. I'll take your bet.’’
    • ‘If you mean it, you're on! There's lots I could do with three hundred quid.’
    • ‘‘A bottle of tequila says we find it in less than a week,’ Liz said. ‘Make it two, and you're on,’ Isabel said, shaking her hand.’
    agreed, settled, all right, very well, that's a bargain, accepted, right
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