Groundless :: Groundless (a.) Without ground or foundation; wanting cause or reason for support; not authorized; false; as, groundless fear; a groundless report or assertion..
Groundling :: Groundling (n.) A fish that keeps at the bottom of the water, as the loach..
Groundling :: Groundling (n.) A spectator in the pit of a theater, which formerly was on the ground, and without floor or benches..