exception proves the rule, the

the exception proves the rule

That which contradicts or goes against a supposed rule therefore proves that it is almost always true. A: "Video games are all just mindless filth that rots kids' brains." B: "I don't know, a lot of them let kids express themselves creatively or learn about the world in new ways." A: "Bah, the exceptions just prove the rule."
See also: exception, prove, rule
Farlex Dictionary of Idioms.

The exception proves the rule.

Prov. Something that does not follow a rule shows that the rule exists. (Often used facetiously, to justify some rule you have proposed but which someone else has listed exceptions. From a Latin phrase meaning that an exception tests a rule.) Ellen: Men are always rude. Jane: But Alan's always polite. And Larry and Ted are polite, too. Ellen: They're just the exceptions that prove the rule. Bill: All the shows on TV are aimed at people with low intelligence. Alan: What about that news program you like to watch? Bill: The exception proves the rule.
See also: exception, prove, rule
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

exception proves the rule, the

An instance that does not obey a rule shows that the rule exists. For example, John's much shorter than average but excels at basketball-the exception proves the rule . This seemingly paradoxical phrase is the converse of the older idea that every rule has an exception. [Mid-1600s]
See also: exception, prove
The American Heritage® Dictionary of Idioms by Christine Ammer.

exception proves the rule, the

Although something may not conform to it, the general rule is still valid. This term originated in the 1500s and is considered a proverb. Playwright Thomas Heywood used it in The Rape of Lucrece (1608), “If the general rule have no exceptions, thou wilt have an empty consistory.” However, in the 1800s several scholars maintained that “proves” in this phrase actually means “tests” (and not “verifies”). Whichever is intended, the phrase is still used, as in “Jane was the only woman who opposed this measure; well, the exception proves the rule.”
See also: exception, prove
The Dictionary of Clichés by Christine Ammer
See also:
  • the exception proves the rule
  • the exception that proves the rule
  • it (only/just) goes to show (you)
  • saddle (one) with (someone or something)
  • saddle someone with
  • saddle with
  • saddled with
  • trend
  • buck the trend
  • live a lie
References in periodicals archive
In an observation that demonstrates how the exception proves the rule, the French folk song sounds the least like Ravel; "his unique musical language is subverted through another kind of artifice, one that favors redefining a self in the context of these songs" (p.