Definition of screw someone over in US English:

screw someone over

phrasal verb

informal
  • Treat someone unfairly; cheat or swindle someone.

    • ‘Resources are used to build settlements and cities, roads between them, and cards that do various things to benefit the cardholder or screw over other players.’
    • ‘I just found out that I trust too easily and he's been screwing me over for the past few months.’
    • ‘It seems doubtful that he'd get much popular support for screwing over Jordan and fleeing to England, although I could be wrong.’
    • ‘Maybe it is the fact that I am just a guy who sits around and watches all his friends get screwed over, but I don't get it.’
    • ‘Why do women trash and screw over the men who treat them with respect, honesty and trust?’
    • ‘In studio offices, I'm certain there's always been a conspiracy to screw me over in at least three out of five categories.’
    • ‘Now that I need the system, it's screwing me over.’
    • ‘Apparently, being screwed over a thousand times by trade restrictions and corrupt governments isn't enough to merit compassion.’
    • ‘In their zeal to throw the infidels and heretics out of the party, the hard right is going to end up overplaying their hand, overestimating their strength and screwing themselves over.’
    • ‘The development of new technologies always screws somebody over in the end.’