Impossible Definition

ĭm-pŏsə-bəl
adjective
Incapable of having existence or of occurring.
American Heritage
Not capable of being, being done, or happening.
Webster's New World
Not capable of being done easily or conveniently.
Webster's New World
Not capable of being endured, used, agreed to, etc. because disagreeable or unsuitable.
An impossible task, an impossible request.
Webster's New World
Unacceptable; intolerable.
Impossible behavior.
American Heritage
noun
Wiktionary
(uncountable) (with definite article) That which seems impossible.
If we work together, we can achieve the impossible!
Wiktionary

Other Word Forms of Impossible

Noun

Singular:
impossible
Plural:
impossibles

Origin of Impossible

  • From Old French impossible, from Latin impossibilis, from in- (“not”) + possibilis (“possible”), from possum (“to be able”) + suffix -ibilis (“-able”).

    From Wiktionary

  • Middle English from Old French from Latin impossibilis in- not in–1 possibilis possible possible

    From American Heritage Dictionary of the English Language, 5th Edition

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