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groundless

[ground-lis] /ˈgraʊnd lɪs/
adjective
1.
without rational basis:
groundless fears.
Origin of groundless
900
before 900; Middle English: bottomless, unfathomable; Old English grundlēas. See ground1, -less
Related forms
groundlessly, adverb
groundlessness, noun
Synonyms
baseless, unfounded, unjustified, idle.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for groundless

groundless

/ˈɡraʊndlɪs/
adjective
1.
without reason or justification: his suspicions were groundless
Derived Forms
groundlessly, adverb
groundlessness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for groundless
adj.

Old English grundleas "bottomless, unfathomable, vast;" see ground (n.) + -less. Figurative sense of "unfathomable" is from early 14c. Related: Groundlessly; groundlessness.

Online Etymology Dictionary, © 2010 Douglas Harper
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