rational

adjective
UK: /ˈræʃənəl/
US: /ˈræʃənəl/

  1. Based on clear thought and reason.

    1. It was a rational decision to sell the car. [ ] [ ]
    2. There must be a rational explanation for his strange behavior last night. [ ] [ ]

  2. Able to think clearly and make decisions based on reason, not emotion.

    1. After a while, she was rational again. [ ] [ ]
    2. Try to remain rational and calm in this highly stressful situation, please. [ ] [ ]

  3. Of or relating to rationals (rational number).

    1. The number 0.5 is a rational number. [ ] [ ]
    2. Any number that can be expressed as a fraction p/q where p and q are integers is considered rational. [ ] [ ]

Synonyms

sensible reasonable logical sane sound
rational noun

  1. A rational number.

    1. 2 is a rational. [ ] [ ]
    2. Rationals are used in math. [ ] [ ]

Frequently Asked Questions

The word "rational" in English means: Based on clear thought and reason., Able to think clearly and make decisions based on reason, not emotion., Of or relating to rationals (rational number)..

The phonetic transcription of "rational" is /ˈræʃənəl/ in British English and /ˈræʃənəl/ in American English. Click the 🔊 button to hear both pronunciations.

Synonyms for "rational": sensible, reasonable, logical, sane, sound.

Example usage of "rational": "It was a rational decision to sell the car.". More examples on the page.