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A lexical rule is in a form of syntactic rule used within many theories of natural language syntax. These rules alter the argument structures of lexical items (for example verbs and declensions) in order to alter their combinatory properties. Lexical rules affect in particular specific word classes and morphemes. Moreover, they may have exceptions, do not apply across word boundaries and can only apply to underlying forms. An example of a lexical rule in spoken English is the deletion of /n/. This rule applies in ''damn'' and ''autumn'', but not in ''hymnal''. Because the rule of n-deletion apparently needs information about the grammatical status of the word, it can only be lexical. Lexical rules are the inverse of postlexical rules. == References == Gussenhoven, C. & Jacobs, H. (1998). Understanding Phonology. Arnold, Londen. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lexical rule」の詳細全文を読む スポンサード リンク
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