Definition from Wiktionary, the free dictionary
- (linguistics) In violation of one or more of the rules and conventions of a language as defined by the grammar, resulting in unacceptable, or incorrect usage.
In formal linguistics, ungrammatical sentences are labelled using an asterisk (*):
- *The subject of this sentence is.
This convention goes back at least as far as Leonard Bloomfield's Language (1933).
linguistics: in violation of one or more of the rules and conventions of a language