spineless

adj 1 (of an animal, etc) having no spine(1); invertebrate （指动物等）无脊椎的. 2 (fig derog 比喻, 贬) (of people) weak, cowardly or easilyfrightened （指人）软弱的, 胆小的, 无骨气的.

spikiness, spiky, spill, spillage, spillway, spin, spin bowler (also spinner), spin-drier, spin-dry, spin-off, spina bifida, spinach, spinal, spinal column, spinal cord, spindle, spindly, spine, spine-chiller, spine-chilling, spinelessly, spinelessness, spinet, spinnaker, spinner, spinney, spinning, spinster, spinsterhood, spiny, spiral, spirally, spire, spirit, spirit-lamp, spirit-level, spirited, spiritedly, spiritedness, spiritless,