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Synonyms for

Rational

Adjective / ˈræʃʌnʌl / / ˈræʃnʌl / Another word for rational — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

Based on reason or logic; able to think clearly and make good decisions.

Synonyms & similar words

rationalnumber intellectual irrational noetic reasonable logical sensible intelligent wise practical well-founded sound judicious informed coherent cogent consistent ratiocinative analytical calculating deliberate measured methodical systematic

Synonyms by register

Formal

logical reasonable sensible sound valid

Informal

makes sense makes sense smart level-headed

Literary

sober discreet

Antonyms

irrational unreasonable illogical absurd foolish senseless unwise

Common collocations

  • rational thought
  • rational decision
  • rational basis
  • rational explanation
  • rational behavior
  • rational mind
  • rational argument

Word family

noun rationality
adjective rational
adverb rationally

Usage note

Often contrasted with 'emotional' or 'irrational'. It implies thinking or acting based on reason and logic rather than feelings or impulse.

Compare "rational" with another word →

Example sentences

  1. He made a rational choice to study for his test instead of watching TV.
  2. The scientists used rational thinking to solve the problem.
  3. It's important to be rational when making important decisions.
  4. She gave a rational explanation for her actions.
  5. His decision was not rational, and he regretted it later.

Quotes

  • The rational mind is the servant of the spirit and obedient to it. - Mary Baker Eddy
  • Rational thoughts never drive people's creativity the way emotions do. - Neil deGrasse Tyson
  • The irrationality of a thing is not an argument against its existence, rather, a condition of it. - Friedrich Nietzsche

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