adjectivize,v.|ˈædʒɪktɪˌvaɪz| [f. adjective n. + -ize.] To make into an adjective. So ˈadjectiˌvizedppl. a. 1901Publ.Mod.Lang.Assoc.Amer. XVI. 142 The completely adjectivized participle.1949E. A. Nida Morphology (ed. 2) iv. 100 Derivational morphemes may..adjectivize nouns, truthful.