deduce

To deduce is to figure something out based on what you already know. When you see a person crying, it's easy to deduce that the person is sad. Unless they're happy, of course. Sometimes happy people cry.

Derived from the Latin ducere, meaning "to lead," a person who deduces something is "leading" their mind from one idea to the next. Deduction is a noun from the verb deduce: it's what we call something that we learn when we deduce. Sherlock Holmes, the famous investigator created by Arthur Conan Doyle, was a master of deduction. He could deduce from a few small clues all of the facts of a murder case.

Definitions of deduce
  1. verb
    reason by deduction; establish by deduction
    synonyms: deduct, derive, infer
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    types:
    extrapolate
    gain knowledge of (an area not known or experienced) by extrapolating
    surmise
    infer from incomplete evidence
    elicit
    derive by reason
    type of:
    conclude, reason, reason out
    decide by reasoning; draw or come to a conclusion
  2. verb
    conclude by reasoning; in logic
    synonyms: infer
    see moresee less
    type of:
    conclude, reason, reason out
    decide by reasoning; draw or come to a conclusion
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