Added 9 October 2026 spineless adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). More about spineless at Wordnik → Where our words come from → Having no spines, prickles, or thorns. Having no spinal column. Cowardly, uncourageous; lacking character. Related Words: gutlesswishy-washynamby-pambyweakcowardlywimpfeebleunarmeddefencelessloosejellyfishcactus Back to today's word