Synonym: level-headed, logical, reasonable, sensible, sound, thinking. Antonym: absurd. Similar words: rationalize, national, educational, nationalism, international, organizational, constitutional convention, emotional. Meaning: ['ræʃənl] 
n. an integer or a fraction. adj. 1. consistent with or based on or using reason 2. of or associated with or requiring the use of the mind 3. capable of being expressed as a quotient of integers 4. having its source in or being guided by the intellect (distinguished from experience or emotion).
n. an integer or a fraction. adj. 1. consistent with or based on or using reason 2. of or associated with or requiring the use of the mind 3. capable of being expressed as a quotient of integers 4. having its source in or being guided by the intellect (distinguished from experience or emotion). 
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1 Life, to be worthy of a rational being, must be always in progression. 
2 It all seemed quite rational to me.
3 He was too upset to be rational.
4 Priestley's rational outlook in science carried over to religion.
5 Man is a rational being.
6 There is no rational explanation for his actions.
7 All your arguments presuppose that he's a rational, intelligent man.
8 The rational and the irrational complement each other. Individually, they are far less powerful.
9 I work on the assumption that people are rational beings.
10 No rational person would ever behave like that.
11 It's impossible to have a rational conversation with him.
12 At the time she was perfectly rational.
13 Integers, rational numbers,(www.Sentencedict.com) and irrational numbers are all real.
14 He is impervious to criticism and rational argument.
15 I'm sure there's a rational explanation for all this.
16 It was a rational plan and bound to succeed.
17 Man is a rational animal.
18 Humans are essentially rational beings.
19 Try to be rational about it.
20 Despite her recent stroke, she is quite rational.
21 The examiners put a premium on rational argument.
22 Education stimulates the development of rational thinking.
23 The decision was based on emotion rather than rational thought.
24 Culley was quite rational at the time of her baby's death.
25 No rational person would go to work in his pyjamas.
26 He's asking you to look at both sides of the case and come to a rational decision.
27 Parents need to be fully informed so they can make a rational decision.
28 What I'd like us to do is put our cards on the table and discuss the situation in a rational manner.
29 With children working from the age of ten, large families were economically rational.
30 The arrangement presumes that both lenders and borrowers are rational.
More similar words: rationalize, national, educational, nationalism, international, organizational, constitutional convention, emotional, ratification, functional, additional, gratification, traditional, proportional, conventional, traditionally, donation, zonation, instructional, institutional, constitutional, unconditionally, operation, unconstitutional, migration, probationary, aberration, reparation, AND operation, separation.