Added 10 October 2026 loosness noun noun ! Definition from Wiktionary (CC BY-SA). More about loosness at Wordnik → Where our words come from → Obsolete form of looseness. Origin From loose + -ness. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: loosenessloosefootloosenesslaxitythightnessuntightnessslacknesslaxnessunmoorednessleavinesseasinessloose-handedness Back to today's word