impossible
UK /ɪmˈpɒs.ɪ.bəl/ · US /ɪmˈpɑ.sə.bəl/ adjective, noun
Forms impossibles inpossible
- adjective Not possible; not able to be done or happen. “It is difficult, if not impossible, to memorize 20,000 consecutive numbers.”
- adjective (colloquial) Very difficult to deal with. “You never listen to a word I say – you're impossible!”
- adjective (mathematics, dated) imaginary “impossible quantities, or imaginary numbers”
- noun An impossibility.
- noun A skateboard trick consisting of a backflip performed in midair.
Synonyms
unfeasible nonpossible unhappenable unpossible inconceivable out of the question unimaginable insufferable unacceptable unsufferable
Antonyms
Etymology
From Middle English impossible, equivalent to im- + possible.
Webster’s 1913
- adjective Not possible; incapable of being done, of existing, etc.; unattainable in the nature of things, or by means at command; insuperably difficult under the circumstances; absurd or impracticable; not feasible.
- noun An impossibility. [Obs.]
Etymology [F., fr. L. impossibilis; pref. im- not + possibilis possible. See Possible.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “impossible”, CC BY-SA 4.0. Details