Simple Definition of groundless

from our Learner's Dictionary

groundless

adjective

ˈgraʊndləs

: not based on facts

The charges against him were (completely) groundless.

Doubts about how the new system would work proved (to be) groundless.

groundless fears

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“Groundless.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/groundless. Accessed 25 Jul. 2026.

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