Added 10 October 2026 erraticness noun noun ! Definition from Wiktionary (CC BY-SA). More about erraticness at Wordnik → Where our words come from → The quality of being erratic. Origin From erratic + -ness. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: erraticityerraticalnesserrabilityunrulinessirregularnesseccentricitysporadicityinstabilityvagarityinconsistentnessunevennessunstableness Back to today's word