Ubius Save Could not find Ubiorum in Logeion dictionaries. Ubiorum proper-name adjective masculine genitive plural, proper-name adjective neuter genitive plural of Ubius Ubiorum Proper-name noun masculine genitive plural of Ubii See Ubiorum in Morpho Gaffiot 2016 Ubĭus, (15) a, um, v. Ubii.