grammaticalize
gram mat i cal ize |grəˈmatikəˌlīz ɡrəˈmætɪkəlaɪz | ▶verb [ with obj. ] Linguistics change (an element ) from one having lexical meaning into one having a largely grammatical function. DERIVATIVES gram mat i cal i za tion |-ˌmatikəliˈzāSHən |noun
grammaticalize |grəˈmatɪk (ə )lʌɪz |(also grammaticalise ) ▶verb [ with obj. ] Linguistics change (an element ) from being one having lexical meaning into one having a largely grammatical function. DERIVATIVES grammaticalization noun