Added 10 October 2026 stableness noun Categories: Describing WordsObscure Words noun ! Definition from WordNet 3.1, Princeton University. More about stableness at Wordnik → Where our words come from → The quality or attribute of being firm and steadfast. Origin From stable + -ness. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: stabilitysteadinessstabilizabilitystolidnesssturdinesssolidnesssettlednesssuperstabilityunstablenessstativityunsteadinessconstancy Back to today's word