spine·less 
/ˈspaɪnləs/ adjective
/ˈspaɪnləs/ adjective 1 [more spineless; most spineless] disapproving : lacking courage or strength
▪ a spineless coward ▪ spineless displays of cowardice 2 : having no spine or spines
▪ Jellyfish are spineless. ▪ a spineless cactus
▪ a spineless coward ▪ spineless displays of cowardice
▪ Jellyfish are spineless. ▪ a spineless cactus
— spine·less·ness noun [noncount]
