Lewis & Short

pompo, no perf., ātum, 1, v. a., to make or do any thing with pomp (post-class.): grandisonis pompare modis, Sedul. 1, 2.
Hence, pompātus, a, um, P. a., magnificently ordered, pompous, splendid: pompatior suggestus, Tert. Spect. 7.