be the exception that proves the rule
be the exception that proves the rule
To contradict a rule and thus confirm that the rule exists. A: "We're always told to get eight hours of sleep, but I usually feel really groggy when I sleep that much." B: "Well, I guess you're the exception that proves the rule."
See also: exception, prove, rule, that
Farlex Dictionary of Idioms.
- exception
- (I've) got to go home and get my beauty sleep
- rule with a velvet glove
- rule the school
- a rule of thumb
- rule of thumb
- abide
- abide by
- make an exception
- rule the roost