Added 9 October 2026 voluminousness /vəˈl(j)uːmɪnəsnəs/ noun Categories: Describing WordsObscure Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about voluminousness at Wordnik → Where our words come from → Greatness of volume. Related Words: voluminosityfullnessplumpinessvoluptuositybuxomnessplumpnessplumpitudeplumptitudefoliositycopiousnessthiccnessmassiness Back to today's word