reasoner


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rea·son

 (rē′zən)
n.
1.
a. The basis or motive for an action, decision, or conviction: There are good reasons to learn a foreign language. See Usage Notes at because, why.
b. A declaration made to explain or justify action, decision, or conviction: What reasons did she give for leaving?
c. A fact or cause that explains why something exists or has occurred: The reason for the building's collapse is unknown.
d. Logic A premise, usually the minor premise, of an argument.
2.
a. The capacity for logical, rational, and analytic thought; intelligence: "Most of us would like to believe that when we say something is right or wrong, we are using our powers of reason alone" (Carl Zimmer).
b. The limit of what is reasonable: "It is a curious thing that, when a man hates or loves beyond reason, he is ready to go beyond reason to gratify his feelings" (Rudyard Kipling).
c. A normal mental state; sanity: He has lost his reason.
v. rea·soned, rea·son·ing, rea·sons
v.tr.
1. To determine or conclude by logical thinking: The doctor reasoned that the patient had a virus.
2. To persuade or dissuade (someone) with reasons: "You boast ... of having reasoned him out of his absurd romance" (William Makepeace Thackeray).
v.intr.
1. To use the faculty of reason; think logically: What would lead you to reason so?
2. To talk or argue logically and persuasively: tried to reason with her son to eat a good breakfast.
3. Obsolete To engage in conversation or discussion.
Idioms:
by reason of
Because of.
in reason
With good sense or justification; reasonably.
within reason
Within the bounds of good sense or practicality.
with reason
With good cause; justifiably.

[Middle English resoun, from Old French raison, from Latin ratiō, ratiōn-, from ratus, past participle of rērī, to consider, think; see ar- in Indo-European roots.]

rea′son·er n.
Synonyms: reason, intuition, understanding, judgment
These nouns refer to the intellectual faculty by which humans seek or attain knowledge or truth. Reason is the power to think rationally and logically and to draw inferences: "Mere reason is insufficient to convince us of its [the Christian religion's] veracity" (David Hume).
Intuition is perception or comprehension, as of truths or facts, without the use of the rational process: I trust my intuitions when it comes to assessing someone's character. Understanding is the faculty by which one understands, often together with the resulting comprehension: "The greatest dangers to liberty lurk in insidious encroachment by men of zeal, well-meaning but without understanding" (Louis D. Brandeis).
Judgment is the ability to assess situations or circumstances and draw sound conclusions: "At twenty years of age, the will reigns; at thirty, the wit; and at forty, the judgment" (Benjamin Franklin). See Also Synonyms at cause, think.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.reasoner - someone who reasons logically
analogist - someone who looks for analogies or who reasons by analogy
casuist, sophist - someone whose reasoning is subtle and often specious
thinker - someone who exercises the mind (usually in an effort to reach a decision)
References in classic literature ?
The little old gentleman stared with both eyes at this illustration of the case; but, though not much of a reasoner, he had the sense in which some logicians on this particular subject do not excel,--that of saying nothing, where nothing could be said.
The obscurity is much oftener in the passions and prejudices of the reasoner than in the subject.
According to the proclivities of each reasoner, play, love, ambition, hidden disorders, and vices, explained the catastrophe, the last scene of a drama begun in 1812.
After a moment's silence, the lady inquired, "Do you know, my dear count," she said, "that you are a very terrible reasoner, and that you look at the world through a somewhat distempered medium?
continued the reasoner, "these people tread upon my toes and look upon me as of very little consequence, or rather of none at all, seeing that they are Englishmen and I am a Frenchman.
But for the trained reasoner to admit such intrusions into his own delicate and finely adjusted temperament was to introduce a distracting factor which might throw a doubt upon all his mental results.
I could well remember the scorn which the theories of the reasoner used then to excite in the practical man.
It is one of those cases where the art of the reasoner should be used rather for the sifting of details than for the acquiring of fresh evidence.
When this remarkable reasoner and his companion had been absorbed into the expeditionary force, it resumed its advance.
You are no very shrewd reasoner, fellow," quoth the knight; "for if it be within the law for you to threaten him with your club, then it is also lawful for me to threaten you with my sword.
Each and every thought-process of the scientific reasoner is metaphysical.
I had never known him to be wrong; and yet the keenest reasoner may occasionally be deceived.