Definition of "groundless"

[B]e the consequences what they may, they shall not move an inch, nor a hair's-breadth from the ground of their groundless spiritual independence, […]

1840, Lewis Rose, chapter III, in An Humble Attempt to Put an End to the Present Divisions in the Church of Scotland, and to Promote Her Usefulness. […] ‎, Glasgow: George Gallie, page 51

At that stage any fears among home fans of a possession monopoly by Laudrup's side were proving groundless, with Cardiff having their fair share of the ball and territory.

2013 November 3, Delme Parfitt, “Cardiff City 1 - 0 Swansea City: Steven Caulker heads Bluebirds to South Wales derby win”, in Wales Online