rationalize
verb
ra·tio·nal·ize
ˈrash-nə-ˌlīz 
ˈra-shə-nə-ˌlīz
rationalized; rationalizing; rationalizes
1
: to bring into accord with reason or cause something to seem reasonable: such as
a
: to substitute a natural for a supernatural explanation of
rationalize a myth
b
: to attribute (one's actions) to rational and creditable motives without analysis of true and especially unconscious motives
rationalized his dislike of his brother
broadly
: to create an excuse or more attractive explanation for
rationalize the problem
2
: to free (a mathematical expression) from irrational parts
rationalize a denominator
3
: to apply research-based managerial principles to (something, such as an industry or its operations) for increased productivity and efficiency
: to provide plausible but untrue reasons for conduct
Examples of rationalize in a Sentence
She tried to rationalize her grandson's strange behavior by blaming it on the boy's father.
He couldn't rationalize buying such an expensive car.
She knows she shouldn't have done it—she's just trying to rationalize.
Management is thinking of ways to rationalize our system of production.
Recent Examples on the Web
Part of me wanted to rationalize it away.
—
Literary Hub, 5 Jan. 2026
Freedom and rule of law were defended last night, but dictators will try to exploit this to rationalize their selfish objectives.
—Rachel Scott, ABC News, 3 Jan. 2026
Society has rationalized the human into triviality, and we’re stuck in a bad game.
—Dan Piepenbring, Harpers Magazine, 30 Dec. 2025
Hollywood’s intoxication with mega-budget blockbusters in the ’80s would plunge Hollywood into massive debt until the subsequent explosion of video helped rationalize the overspending.
—Peter Bart, Deadline, 18 Dec. 2025
See All Example Sentences for rationalize
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Literary Hub, 5 Jan. 2026
Freedom and rule of law were defended last night, but dictators will try to exploit this to rationalize their selfish objectives.
—Rachel Scott, ABC News, 3 Jan. 2026
Society has rationalized the human into triviality, and we’re stuck in a bad game.
—Dan Piepenbring, Harpers Magazine, 30 Dec. 2025
Hollywood’s intoxication with mega-budget blockbusters in the ’80s would plunge Hollywood into massive debt until the subsequent explosion of video helped rationalize the overspending.
—Peter Bart, Deadline, 18 Dec. 2025
See All Example Sentences for rationalize
Cite this Entry
“Rationalize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rationalize. Accessed 9 Jan. 2026.
Copy CitationKids Definition
rationalize
verb
ra·tio·nal·ize
ˈrash-nə-ˌlīz
-ən-ᵊl-ˌīz
rationalized; rationalizing
1
: to bring into agreement with reason or cause something to seem believable
2
: to remove irrational expressions from
rationalize a denominator
Medical Definition
rationalize
verb
ra·tio·nal·ize
variants
also British rationalise
rationalized also British rationalised; rationalizing also British rationalising
: to bring into accord with reason or cause something to seem reasonable
especially
: to attribute (one's actions) to rational and creditable motives without analysis of true and especially unconscious motives
he tried to rationalize his cruel behavior
: to provide plausible but untrue reasons for conduct
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