Từ điển trực tuyến - Online Dictionary

English - Vietnamese Dictionary
rational /'ræʃənl/
  • tính từ
    • có lý trí, dựa trên lý trí
      • a rational being: một sinh vật có lý trí
      • to be quite rational: hoàn toàn có lý trí; có đầy đủ lý trí
      • a confidence: một sự tin tưởng dựa trên lý trí
    • có lý, phải lẽ; vừa phải, có chừng mực
      • a rational explanation: một lời giải thích có lý
    • (toán học) hữu tỷ
      • rational algebratic fraction: phân thức đại số hữu tỷ
    • a rational dress
      • quần đàn bà bó ở đầu gối
Concise Dictionary
+an integer or a fraction
+consistent with or based on or using reason
+of or associated with or requiring the use of the mind
+capable of being expressed as a quotient of integers
+having its source in or being guided by the intellect (distinguished from experience or emotion)

Thesaurus Dictionary
1 well-balanced, sane, sound, normal, reasonable, reasoning, logical, ratiocinative, clear-headed, clear-eyed, sober; of sound mind, Colloq all there:
Desmond is a rational human being who would be able to advise you about your problem.
2 discriminating, intelligent, thinking, enlightened, prudent, wise, knowledgeable, informed:
We could not have elected a more rational representative for our cause than Robert Brown.
3 sensible, common-sense, commonsensical, practical, pragmatic, down-to-earth, everyday, acceptable, reasonable, logical:
Philippa thinks she has a rational explanation for the strange light we saw in the sky last night.
Advanced English Dictionary
+ adjective
1 (of behaviour, ideas, etc.) based on reason rather than emotions: a rational argument / choice / decision + rational analysis / thought + There is no rational explanation for his actions.
2 (of a person) able to think clearly and make decisions based on reason rather than emotions: No rational person would ever behave like that.
rationality noun [U]: the rationality of his argument
rationally adverb: to act / behave / think rationally + She argued her case calmly and rationally.
Collocation Dictionary


be, seem
It all seemed quite rational to me.


highly, very | entirely, fully, perfectly, quite
At the time she was perfectly rational.
| purely, strictly | essentially
Humans are essentially rational beings.
| apparently | economically
With children working from the age of ten, large families were economically rational.


Try to be rational about it.

Random quote: Correction does much, but encouragement does more.: Johann Wolfgang von Goethe

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Optional: 01/2018: Picture Dictionary

Updated: 05/06/2018: List of Academic Words