adjective
groundless
GROWND-luhs
adjective
1
Not based on any real evidence or reason; baseless.
"The rumours turned out to be entirely groundless."
How to Use Groundless
Learner’s notesIn plain EnglishHaving no real basis or supporting evidence.
Easily confused with
Common pairings
groundless fears
groundless accusations
Word Forms
more groundless comparative, most groundless superlative
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The rumours turned out to be entirely _____.
Etymology
From Old English grundlēas, "bottomless," from ground plus the "-less" suffix.