He ran afoul of the new parking rules.
run afoul of
idiomTo contravene.
The small business ran afoul of tax regulations and had to pay a fine.
In her eagerness to publish quickly, the young researcher inadvertently ran afoul of ethical guidelines governing data privacy.
- 01
break into a run
To start running.
- 02
common run
Ordinary persons, things, or events.
- 03
dry run
A practice or rehearsal; especially, one that goes through all the motions of a physical process but without the raw material or workpiece present.
- 04
dummy run
A trial or practice before the real attempt.
- 05
good run
Success over an extended period.
- 06
hit and run
A road accident in which a driver hits someone and then drives away without stopping to help or take responsibility.
- 07
hold with the hare and run with the hounds
To oppose an action or behavior and yet engage in the same action or behavior; to be a hypocrite.
- 08
learn to walk before one can run
Before one can perform a complicated task, one has to learn how to perform more simple tasks.
Last updated April 17, 2026