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.

“The impact on the bookings has been quite hard,” said Patel, who called the lawsuit groundless.

From The Wall Street Journal • Nov. 20, 2025

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

As it turns out, the theory is groundless; on the next Saturday, Pete even brings me a homemade Egg McMuffin as a treat.

From "Nickel and Dimed: On (Not) Getting By in America" by Barbara Ehrenreich

Vocabulary lists containing groundless

"Oedipus the King" by Sophocles

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