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Synonyms

baseless

American  
[beys-lis] / ˈbeɪs lɪs /

adjective

  1. having no base; without foundation; groundless.

    a baseless claim.


baseless British  
/ ˈbeɪslɪs /

adjective

  1. not based on fact; unfounded

    a baseless supposition

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of baseless

First recorded in 1600–10; base 1 + -less

Explanation

If something's baseless, it can't be proven or justified. A baseless accusation of cheating, for example, has no facts or evidence to back it up. Baseless facts in a research paper don't have sources — they may have simply come from the writer's own imagination. A baseless allegation is when one person accuses another of doing something wrong, without having any solid proof or reason for the accusation. The sense of base that baseless comes from is "foundation," from the Greek basis, "step or pedestal."

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Vocabulary lists containing baseless

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 Israeli foreign ministry has said the claims of torture are "false and baseless".

From BBC • May 5, 2026

OpenAI has called Musk’s claims baseless, while Microsoft has denied any wrongdoing related to its relationship with the AI lab.

From MarketWatch • Apr. 28, 2026

Beijing shot back that it viewed Washington’s remarks as a "baseless accusation", maintaining that its actions were legitimate.

From Barron's • Apr. 26, 2026

Earlier this month, after Sun aired criticism on X, World Liberty tweeted, “Justin’s favorite move is playing the victim while making baseless allegations to cover up his own misconduct.”

From The Wall Street Journal • Apr. 22, 2026

So that the anxiety caused by the public reappearance of his family name, having to do with the coronation of Remedios the Beauty, was baseless.

From "One Hundred Years of Solitude" by Gabriel Garcia Marquez

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