groundless

[ground-lis] / ˈgraʊnd lɪs /

ADJECTIVE

without reason, justification

Synonyms

STRONGEST

baseless false flimsy gratuitous illogical illusory unfounded unjustified unsupported unwarranted

WEAK

bottomless causeless chimerical empty foundationless idle imaginary unauthorized uncalled-for unprovoked

Antonyms

STRONGEST

correct genuine justified real reasonable right substantiated warranted

WEAK

called-for grounded proven

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Beijing has denounced the multilateral exercises as groundless provocation.

From The Wall Street Journal • May 4, 2026

Beijing at the time called the accusations "groundless".

From Barron's • Oct. 19, 2025

In response, the corporation said Sir Ed's "continuing attacks on BBC journalism are completely groundless".

From BBC • Sep. 23, 2025

Lot of reasons for that, it’s not groundless optimism.

From Salon • Aug. 5, 2025

It was with a heavy heart that Frodo saw Aragorn and Legolas climb the steep bank and vanish into the mists; but his fears proved groundless.

From "The Fellowship of the Ring" by J.R.R. Tolkien

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