exception

1. An exception is something that doesn’t agree with a rule. Exceptions are unusual. For example, the rule for making plurals in English is “add an s to the word”: one cat — two cats, one dog — four dogs. But there are some exceptions to this rule, such as one mouse — two mice, one man — two men.
   This case is an exception to the rule.

   Anybody who is late for work will be fired. There will be no exceptions.