Thesaurus.com
Dictionary.com
Definitions

rationality

[rash-uh-nal-i-tee] / ˌræʃ əˈnæl ɪ ti /
NOUN
logic
Synonyms
STRONGEST
coherence good sense sanity
STRONG
argumentation connection deduction dialectic induction inference linkage philosophy ratiocination rationale reason relationship sense syllogism thesis
WEAK
antithesis and synthesis course of thought sound judgment syllogistics train of thought
NOUN
sense
Synonyms
STRONGEST
logic
STRONG
acceptation advantage burden core definition drift gist good heart implication import interpretation matter meat message nitty-gritty nuance nub purport purpose rationale rationalness reason short significance signification stuff substance thrust understanding upshot value worth
WEAK
bottom line denotatiton intendment meat and potatoes name of the game nature of the beast nuts and bolts punch line rhyme or reason significancy
Antonyms
STRONG
disadvantage exterior exteriority insignificance meaninglessness outside surface

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.

Only the practical rationality and moral rootedness of the New World can redeem the old.

From The Wall Street Journal • Feb. 27, 2026

"These rules lack humanity and rationality, and they oppress us every day."

From Barron's • Jan. 9, 2026

We comfort the comfortable, and we look for hope in norms and in institutions and in rationality.

From Slate • Dec. 17, 2025

It’s the second factor that often keeps takeover bids alive long after the proposed deals lose their economic rationality.

From Los Angeles Times • Dec. 11, 2025

“Something is knocking on the doors,” Theodora said in a tone of pure rationality.

From "The Haunting of Hill House" by Shirley Jackson

Vocabulary lists containing rationality

John Nash (1928-2015) Tribute List

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

"Simon's Saga," Vocabulary from Episode 21

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

167 Vocabulary words from the Supreme Court's DOMA Decision

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!