baseless

adjective

Definition of baselessnext
as in unreasonable
having no basis in reason or fact baseless rumors that the baseball player was using steroids

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Examples Sentences

Recent Examples of Synonyms for baseless
  1. unreasonable
  2. unfounded
  3. groundless
  4. unsubstantiated
Adjective
  • In the comments, many people criticized the niece for disregarding her uncle's feelings and making an unreasonable request.
    Erin Clack, People.com, 14 Jan. 2025
  • Most Canadians supported the move and opposed the weekslong blockades, but the Federal Court of Canada ruled last year that the use of the powers was unreasonable.
    Amanda Coletta The Washington Post, arkansasonline.com, 7 Jan. 2025
Definition of unreasonable
Adjective
  • However, my fears that the extended display would make the laptop unbalanced and easy to topple proved unfounded after a brief hands-on test, with the device remaining stable when used on a desktop, even under my heavy-handed typing.
    Barry Collins, Forbes, 7 Jan. 2025
  • The threat made by the suspect, according to the city's police department, was unfounded.
    Andy Biggs, Newsweek, 25 Dec. 2024
Definition of unfounded
Adjective
  • The claims against Trump’s character are not groundless.
    Avi Nelson, Boston Herald, 30 Oct. 2024
  • The claims of an invasion of the Eastern seaboard by swarms of drones has every marker of a groundless social media frenzy.
    Michael Hiltzik, Los Angeles Times, 24 Dec. 2024
Definition of groundless
Adjective
  • Happy Days actor Henry Winkler was one user who shared the unproven theory online, taking to X (formerly Twitter) to blame an unknown arsonist in an unsubstantiated claim.
    Kevin Dolak, The Hollywood Reporter, 9 Jan. 2025
  • This is based on an unverified, unsubstantiated claim sent from a social media account with a record of making unsubstantiated claims.
    Kevin Lynn, Newsweek, 7 Jan. 2025
Definition of unsubstantiated
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Thesaurus Entries Near baseless

based

baseless

baseline

See More Nearby Entries 

Cite this Entry

“Baseless.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/baseless. Accessed 20 Jan. 2025.

Copy Citation

Share

More from Merriam-Webster on baseless

Nglish: Translation of baseless for Spanish Speakers

Britannica English: Translation of baseless for Arabic Speakers

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Popular in Grammar & Usage

See All

'Affect' vs. 'Effect'

Using Bullet Points ( • )

Why is '-ed' sometimes pronounced at the end of a word?

What's the difference between 'fascism' and 'socialism'?

More Commonly Misspelled Words
See All

Popular in Wordplay

See All

Top 12 Sophisticated Compliments

Word of the Year 2024 | Polarization

Terroir, Oenophile, & Magnum: Ten Words About Wine

8 Words for Lesser-Known Musical Instruments

10 Words from Taylor Swift Songs (Merriam's Version)
See All

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Word Game Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
Missing Letter A daily crossword with a twist
white rubber duck stands out in a row of yellow ducks
Odd Word Out: Synonyms Quiz Figure out which word isn't like the others.