illogical

When there's no good reason or explanation for something, don't fret; chances are it's illogical — meaning that it has no rational explanation behind it.

The word logic has origins in the Greek root logos meaning "reason, idea, or word." But slap the prefix il- in front of it, and suddenly the word reverses its meaning. Illogical? Check out other words with the same prefix, like illegitimate and illegal, and you'll quickly see that the prefixil- in front of a word starting in "l" means "not." Suddenly the meaning of illogical isn't quite so illogical after all, is it?

Definitions of illogical
  1. adjective
    lacking in correct logical relation
    synonyms: unlogical
    incoherent
    without logical or meaningful connection
    absurd
    inconsistent with reason or logic or common sense
    inconsequential
    not following logically as a consequence
    intuitive, nonrational, visceral
    obtained through intuition rather than from reasoning or observation
    irrational
    not consistent with or using reason
    unreasonable
    not reasonable; not showing good judgment
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    Antonyms:
    logical
    capable of or reflecting the capability for correct and valid reasoning
    analytic, analytical
    of a proposition that is necessarily true independent of fact or experience
    synthetic, synthetical
    of a proposition whose truth value is determined by observation or facts
    coherent, consistent, logical, ordered
    marked by an orderly, logical, and aesthetically consistent relation of parts
    argumentative, dianoetic, discursive
    proceeding to a conclusion by reason or argument rather than intuition
    formal
    logically deductive
    ratiocinative
    based on exact thinking
    rational
    consistent with or based on or using reason
    reasonable, sensible
    showing reason or sound judgment
    show more antonyms...
  2. adjective
    lacking orderly continuity
    synonyms: confused, disconnected, disjointed, disordered, garbled, scattered, unconnected
    incoherent
    without logical or meaningful connection
Word Family
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