Home › Words › F › firmitudefirmitudefirmitude · noun — strength; stability.Definition from Wiktionary (CC BY-SA 3.0).EtymologyFrom Latin firmitudo. See firm.nounstrength; stabilitye.g.“Thou lookest for firmitude and vigour in those graces, which thou wilt allow in thy best disciples, no less than truth.” — 1612–1626, [Joseph Hall], “(please specify the page)”, in [Contemplations vpon the Principall Passages of the Holy Storie], volume (please specify |volume=II, V, or VI), London, →OCLC:Definitions & examples from Wiktionary (CC BY-SA 3.0).