spineless

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spine·less / ˈspīnlis/ • adj. 1. having no spine or backbone; invertebrate. ∎ fig. (of a person) lacking resolution; weak and purposeless: a spineless coward.2. (of an animal or plant) lacking spines: spineless forms of prickly pear have been selected.DERIVATIVES: spine·less·ly adv.spine·less·ness n.