moved the goalposts

Shifted success criteria

Moved the goalposts means to change the rules or criteria after someone has already tried to meet them, making success unfairly difficult or impossible.

The image is of literally relocating the goals in a sport so that a valid attempt no longer counts: Every time I meet her standards, she moves the goalposts.

The phrase implies bad faith—shifting requirements to deny someone credit or keep them striving indefinitely.

Related

loaded dice · change · alteration · contravene · double standards · double dealing · shifting · manipulation · confirmation bias · framing effect · inconsistency · rationalization · gaslighting · misdirection · bad faith · unpredictability · cheating · deception

Opposites
consistency of standards

moved the goalpostsfollowed through

Completed what was started

made good on

Family

moved, moves, moving, movers, movable, unmoved, movement, movements, moveable

Familiarity
Top 200,000
Profile
Used worldwide · Timeless · Negative · Everyday, not technical · Rated G