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