ceremonious Copy link Outline I. Attended with due ceremonyII. Excessively attentive to ceremony or forms • ceremonious: I. Attended with due ceremony: sollennis, e (or sōlennis, -emnis): c. banquets, s. epulae, Cic.: Hor. II. Excessively attentive to ceremony or forms: perh. officii putide studiosus atque molestus: v. formal.