groundlessness n 1: the quality of lacking substance or value; "the groundlessness of their report was quickly recognized" [syn: {groundlessness}, {idleness}]
Groundless \Ground"less\, a. [AS. grundle['a]s bottomless.] Without ground or foundation; wanting cause or reason for support; not authorized; false; baseless; as, groundless fear; a groundless report, rumor, or assertion. -- {Ground"less*ly}, adv. -- {Ground"less*ness}, n.