Entry 1 sense Webster, 1913 Grandiloquent /grăn-dĭl'-ək-wənt/ · Gran·dil·o·quent · IPA /ɡɹænˈdɪl.ə.kwənt/ 01 a. Speaking in a lofty style; pompous; bombastic. 1. Speaking in a lofty style; pompous; bombastic.