multitudiˈnarious,a.rare—1. [f. L. type *multitūdināri-us, f.multitūdin-: see multitude and -arious.] Multitudinous. So multiˈtudinarya.rare—0 (Worcester 1846, citing Mitford). 1810Splendid Follies I. 188 Don't talk to me..my ideas are multitudinarious.