postposition UK /ˌpəʊstpəˈzɪʃən/US /ˌpoʊstpəˈzɪʃən/noun 2verb 1forms 3 noun2 •A word that has the same purpose as a preposition but comes after the noun. •The act of placing after, or the state of being placed after. verb1 •To be placed after a the word that it modifies. formspostpositioned · postpositioning · postpositions