Added 9 October 2026 spaceful adjective Categories: Obscure Words adjective ! Definition from Wiktionary (CC BY-SA). More about spaceful at Wordnik → Where our words come from → wide, extensive, spacious, commodious Origin From space + -ful. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: scopiousspacyspaciouscapacioussprawlingscopefulroomylargificalplentyfulamplelargefulsome Back to today's word