Added 8 October 2026 usefulness /ˈjuːsfəlnəs/ noun Categories: Describing WordsUncommon Words In Latin: utilitas Wiktionary noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about usefulness at Wordnik → Where our words come from → The quality of being of practical use. Related Words: utilityusefulusefullyusabilityeffectivenessuseefficacyfunctionavailproductivenessexpediencycontribution Back to today's word