Thesaurus
Synonyms & Antonyms of irrational
not using or following good reasoning
- it's irrational to think that you can continue to consume an excess of calories and not gain weight
Synonyms for irrational
Words Related to irrational
- eristic
- (also eristical),
- misleading,
- sophistic
- (or sophistical),
- specious
Near Antonyms for irrational
Antonyms for irrational
Learn More About irrational
Cite this Entry
“Irrational.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/irrational. Accessed 16 Jan. 2022.
Style: MLA
MLA
Chicago
APA
Merriam-Webster
Chicago
APA
Merriam-Webster
Test Your Vocabulary
Difficult Spelling Words Quiz
-
- Which is the correct spelling?
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share irrational
Time Traveler for irrational
The first known use of irrational was in the 14th century
See more words from the same century