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Definition of groundless

groundless

/ˈɡraʊnd.ləs/
ground · less
Adverb:groundlessly
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groundless Lexical Profile

groundless Game Scores & Validity

• adjective

1

Not based on any good reason, valid evidence, or factual foundation (typically of a fear, rumor, or accusation).

Example

"The committee quickly dismissed the allegations as completely groundless after reviewing the financial records."

Synonyms
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Antonyms
View all antonyms for groundless

• Rhymes for groundless

• Nearby Words

groundhog
grounding
groundkeeper
groundless
groundlessly
groundnut
groundout

Word Origin & Etymology

From Old English 'grundleas', originally meaning 'bottomless, unfathomable, or boundless', formed from 'grund' (ground, bottom, foundation) and '-leas' (-less). The figurative sense of 'lacking a rational basis or valid reason' emerged in the early 17th century.

Cite this Entry

Wordmom. (2026). Definition of Groundless. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/groundless
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