unreasonableness

noun

as in irrationality

Related Words

Relevance

Dissimilar Words

Example Sentences

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.
Recent Examples of unreasonableness If the assassination made the President a Christlike figure, his forbearance in the face of a wife’s unreasonableness provides him with an extra measure of purity. — Literary Hub, 21 May 2026
Recent Examples of Synonyms for unreasonableness
  1. irrationality
  2. extremism
Noun
  • The irrationality ensures that no petal is directly above another.
    — Manon Bischoff, Scientific American, 13 Oct. 2026
  • In other words, emotion, empathy and irrationality could be seen as some of the most powerful counterweights to AI.
    — Billy J. Stratton, The Conversation, 21 Aug. 2026
Definition of irrationality
Noun
  • The brazen, unmasked calls to erase Israel triggered fierce bipartisan backlash from lawmakers condemning the rising wave of open extremism.
    — Staff, FOXNews.com, 15 Oct. 2026
  • The same pattern is evident in the rise of Islamic fundamentalism in the 1960s and 1970s, which culminated in the establishment of Islamic regimes and the spread of Islamist extremism.
    — Mansoor Moaddel, Foreign Affairs, 15 Oct. 2026
Definition of extremism

Browse Nearby Words

unreasonable
unreasonableness
unreasonably
See all Nearby Words

Cite this Entry

“Unreasonableness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unreasonableness. Accessed 20 Oct. 2026.

Copy Citation
Love words? Need even more definitions?

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

Last Updated: - Updated example sentences

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of compunction

See Definitions and Examples »

Popular in Grammar & Usage

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

'Can' vs. 'May'

'Affect' vs. 'Effect'

More Commonly Mispronounced Words

Is it 'nerve-racking' or 'nerve-wracking'?
See More

Popular in Wordplay

See More

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

Did 'orange' the fruit or the color come first?

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

The Longest Long Words List

9 Words That Sound Like Insults But Aren't
See More

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 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?
The Missing Letter A daily crossword with a twist
artwork of illustrated limes with the text limes and smile with an arrow connecting the two words
Quiz: Spot the Anagram! Scramble these words to find new words with the e...
See All