adjectival UK /ˌæ.dʒɛkˈtaɪ.vəl/US /ˌæ.d͡ʒəkˈtaɪ.vəl/adjective 2noun 1forms 3 adjective2 •Of or relating to or functioning as an adjective. •Of or relating to procedure, especially to technicalities thereof. noun1 •An adjectival phrase or clause.Within this line of reasoning, then, Tagalog is classified as a language in which adjectivals are essentially neutral between a nouny and a verby interpretation. — 2013 formsadjectivals · more adjectival · most adjectival