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groundless

[ ground-lis ]

/ ˈgraʊnd lɪs /

SEE SYNONYMS FOR groundless ON THESAURUS.COM

adjective

without rational basis: groundless fears.

Origin of groundless

before 900; Middle English: bottomless, unfathomable; Old English grundlēas. See ground¹, -less

SYNONYMS FOR groundless

baseless, unfounded, unjustified, idle.

SEE SYNONYMS FOR groundless ON THESAURUS.COM

OTHER WORDS FROM groundless

ground·less·ly, adverb ground·less·ness, noun

Words nearby groundless

groundfire, groundhog, groundhog day, grounding, groundkeeper, groundless, groundling, groundmass, groundnut, groundnut oil, groundout

Example sentences from the Web for groundless

I can say all of this without hesitation because these concerns have been investigated and found to be groundless.

Pediatrician: Vaccinate Your Kids—Or Get Out of My Office |Russell Saunders |January 30, 2014 |DAILY BEAST
“It is not a question of starting an investigation over a case that is groundless,” he said.

Somalia Jails Woman and Journalist Over Soldier Rape Claims |Laila Ali |February 9, 2013 |DAILY BEAST
At the most basic legal level, the charges of plagiarism are groundless.

Is Bob Dylan a Phony? |Sean Wilentz |April 30, 2010 |DAILY BEAST
He then acknowledged that the notion of "a methodical regularity" in the Essay on Criticism was a "groundless opinion."

The Works of Alexander Pope, Volume 2 (of 10) |Alexander Pope

You would be surprised if you knew the number of complaints made to us, which, on investigation, turn out to be groundless.

Post Haste |R.M. Ballantyne
But a still more satisfactory answer is, that the apprehension of danger is groundless, and therefore the whole argument fails.

Select Speeches of Daniel Webster |Daniel Webster
But soon after, a lieutenant of the artillery came in with a groundless report that Green had received reinforcements.

Recollections with the Third Iowa Regiment |Seymour D. (Seymour Dwight) Thompson
I was, at first, inclined to suspect in my friend some capricious and groundless antipathy.

Arthur Mervyn |Charles Brockden Brown

British Dictionary definitions for groundless

groundless

/ (ˈɡraʊndlɪs) /

adjective

without reason or justification his suspicions were groundless

Derived forms of groundless

groundlessly, adverb groundlessness, noun