Antonyms

• Rational (Adj.)

= ​based on clear thought and reason

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​“The government must have a rational plan for economic development.”

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• Rationalize (Verb)

= to try to find reasons to explain your behavior, decisions, etc.

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“She rationalized the cost by saying that an expensive carpet would last longer than a cheaper one.

• Antonyms

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​Adding prefixes/suffixes

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rational => irrational​

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