rational
[adjective]
Synonyms: sane, intelligent, logical, lucid, realistic, reasonable, sensible, sound, wise

---

Antonyms: animal, irrational, absurd
Contrasted words: rash, reckless, wild, groundless, illogical, unreasonable, unreasoning, unsound, crazy, demented, deranged
Related Words: calm, cool, level-headed, sober, stable, circumspect, judicious, prudent, lucid, normal, sane

[TahlilGaran] English Synonym Dictionary ▲

ra‧tion‧al AC /ˈræʃənəl/ adjective
[Word Family: noun: rationality ≠ irrationality, rationale, rationalism, rationalist, rationalization; adjective: rational ≠ irrational, rationalist; verb: rationalize; adverb: rationally ≠ irrationally]
[Date: 1300-1400; Language: Latin; Origin: rationalis, from ratio; ⇒ ratio]

1. rational thoughts, decisions etc are based on reasons rather than emotions Antonym : irrational:
Parents need to be fully informed so they can make a rational decision.
I’m sure there’s a rational explanation for all this.
It’s impossible to have a rational conversation with him.

2. a rational person is able to think calmly and sensibly Antonym : irrational:
Culley was quite rational at the time of her baby’s death.

3. formal able to make sensible judgments:
Man is a rational animal.
—rationally adverb:
We were too shocked to think rationally.
—rationality /ˌræʃəˈnæləlti, ˌræʃəˈnælɪlti/ noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲

rational
adj.
VERBS be, seem It all seemed quite rational to me.
ADV. 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.
PREP. about Try to be rational about it.

[TahlilGaran] Collocations Dictionary ▲

rational

a rational explanation
I told myself that there must be some simple, rational explanation.
a rational decision/choice
The patient was incapable of making a rational decision.
a rational approach
We must adopt a rational approach when dealing with this problem.
a rational analysis
Emotions are running so high that any rational analysis of the situation is difficult.
rational thought
Babies were thought to be incapable of rational thought.
rational argument
Nuclear weapons are so absurd that rational argument about their use is scarcely possible.
a rational conversation/discussion
Let's all calm down and have a rational discussion.
perfectly rational
I'm sure there's a perfectly rational explanation.

[TahlilGaran] Collocations Dictionary ▲