reason

A reason explains why you do something. The reason you go to school is to learn things (and because it's the law).

Reason usually has to do with thought and logic, as opposed to emotion. If people think you show good reason, or are reasonable, it means you think things through. If people think you have a good reason for doing something, it means you have a motive that makes sense. Reason can also be a verb. You might reason something out, which means that you look at all sides of the issue and then and decide what to do.

Definitions of reason
  1. noun
    a rational motive for a belief or action
    “the reason that war was declared”
    synonyms: ground
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    types:
    occasion
    a reason
    account, score
    grounds
    wherefore, why
    the cause or intention underlying an action or situation, especially in the phrase `the whys and wherefores'
    type of:
    rational motive
    a motive that can be defended by reasoning or logical argument
  2. noun
    a fact that logically justifies some premise or conclusion
    “there is reason to believe he is lying”
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    types:
    indication
    (medicine) a reason to prescribe a drug or perform a procedure
    contraindication
    (medicine) a reason that makes it inadvisable to prescribe a particular drug or employ a particular procedure or treatment
    type of:
    fact
    a piece of information about circumstances that exist or events that have occurred
  3. noun
    a justification for something existing or happening
    “they had good reason to rejoice”
    synonyms: cause, grounds
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    type of:
    justification
    a statement in explanation of some action or belief
  4. noun
    an explanation of the cause of some phenomenon
    “the reason a steady state was never reached was that the back pressure built up too slowly”
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    type of:
    account, explanation
    a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc.
  5. noun
    the capacity for rational thought or inference or discrimination
    “we are told that man is endowed with reason and capable of distinguishing good from evil”
    synonyms: intellect, understanding
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    type of:
    faculty, mental faculty, module
    one of the inherent cognitive or perceptual powers of the mind
  6. noun
    the state of having good sense and sound judgment
    “he had to rely less on reason than on rousing their emotions”
    synonyms: rationality, reasonableness
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    type of:
    saneness, sanity
    normal or sound powers of mind
  7. verb
    decide by reasoning; draw or come to a conclusion
    “We reasoned that it was cheaper to rent than to buy a house”
    synonyms: conclude, reason out
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    types:
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    induce
    reason or establish by induction
    deduce, deduct, derive, infer
    reason by deduction; establish by deduction
    syllogise, syllogize
    reason by syllogisms
    feel, find
    come to believe on the basis of emotion, intuitions, or indefinite grounds
    deduce, infer
    conclude by reasoning; in logic
    gather
    conclude from evidence
    extrapolate, generalise, generalize, infer
    draw from specific cases for more general cases
    extrapolate
    gain knowledge of (an area not known or experienced) by extrapolating
    surmise
    infer from incomplete evidence
    elicit
    derive by reason
    overgeneralise, overgeneralize
    draw too general a conclusion
    universalise, universalize
    make universal
    type of:
    cerebrate, cogitate, think
    use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments
  8. verb
    think logically
    “The children must learn to reason
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    types:
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    rationalise away, rationalize away
    substitute a natural for a supernatural explanation of
    theorize
    form or construct theories
    theorize
    construct a theory about
    ratiocinate
    reason methodologically and logically
    calculate, cipher, compute, cypher, figure, reckon, work out
    make a mathematical calculation or computation
    categorise, categorize
    place into or assign to a category
    speculate
    talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion
    quantise, quantize
    apply quantum theory to; restrict the number of possible values of (a quantity) or states of (a physical entity or system) so that certain variables can assume only certain discrete magnitudes that are integral multiples of a common factor
    extract
    calculate the root of a number
    process
    perform mathematical and logical operations on (data) according to programmed instructions in order to obtain the required information
    prorate
    divide or assess proportionally
    miscalculate, misestimate
    calculate incorrectly
    recalculate
    calculate anew
    average, average out
    compute the average of
    factor, factor in, factor out
    resolve into factors
    add, add together
    make an addition by combining numbers
    deduct, subtract, take off
    make a subtraction
    multiply
    combine by multiplication
    divide, fraction
    perform a division
    extrapolate, interpolate
    estimate the value of
    differentiate
    calculate a derivative; take the derivative
    integrate
    calculate the integral of; calculate by integration
    survey
    plot a map of (land)
    assort, class, classify, separate, sort, sort out
    arrange or order by classes or categories
    approximate, estimate, gauge, guess, judge
    judge tentatively or form an estimate of (quantities or time)
    budget
    make a budget
    capitalise, capitalize
    compute the present value of a business or an income
    resolve, solve
    find the solution
    guess, hazard, pretend, venture
    put forward, of a guess, in spite of possible refutation
    say, suppose
    express a supposition
    type of:
    cerebrate, cogitate, think
    use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments
  9. verb
    present reasons and arguments
    synonyms: argue
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    types:
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    re-argue
    argue again
    expostulate
    reason with (somebody) for the purpose of dissuasion
    defend, fend for, support
    argue or speak in defense of
    apologise, apologize, excuse, justify, rationalise, rationalize
    defend, explain, clear away, or make excuses for by reasoning
    stand up, stick up
    defend against attack or criticism
    uphold
    stand up for; stick up for; of causes, principles, or ideals
    type of:
    lay out, present, represent
    bring forward and present to the mind
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