Definition of estop in English:



  • Bar or preclude by estoppel.

    ‘the company may be estopped from denying either statement’
    • ‘By reason thereof, the Claimant is estopped from denying that he is entitled to use the driveway for those purposes.’
    • ‘Taking all these factors into consideration, I find that the plaintiffs are estopped from making this claim at this late stage.’
    • ‘The Court of Appeal held that by standing by and encouraging the woman to believe the house was now hers, he was estopped from denying that this was the case.’
    • ‘As a matter of law the claimant is thereby estopped from bringing the present claim.’
    • ‘Your Honour, the first defendant's position is that the plaintiff is either estopped from bringing these proceedings or the proceedings constitute an abuse of process.’


Late Middle English (in the sense ‘stop up, dam, plug’): from Old French estopper stop up, impede, from late Latin stuppare, from Latin stuppa tow, oakum. Compare with stop and stuff.