decahedron/dekəʹheedrən/ noun (pl decahedra decahedrons)

• unsteady
• unstep
• unstick
• unstinting
• unstop
• unstoppable
• unstressed
• unstring
• unstructured
• unstrung
• unstuck
• unstudied
• unsubscribe
• unsubstantial
• unsubstantiated
• unsuccessful
• unsuitable
• unsung
• unsure
• unsuspected
• unsuspecting
• unswerving
• untangle
• untapped
• untarnished