'Impossible' definitions:

Definition of 'impossible'

From: WordNet
adjective
Not capable of occurring or being accomplished or dealt with; "an impossible dream"; "an impossible situation" [ant: possible]
adjective
Totally unlikely [syn: impossible, inconceivable, out of the question, unimaginable]
adjective
Used of persons or their behavior; "impossible behavior"; "insufferable insolence" [syn: impossible, insufferable, unacceptable, unsufferable]
noun
Something that cannot be done; "his assignment verged on the impossible"

Definition of 'Impossible'

From: GCIDE
  • Impossible \Im*pos"si*ble\, n. An impossibility; as, he tried to do the impossible. [Obs.] [1913 Webster]
  • "Madam," quoth he, "this were an impossible!" --Chaucer. [1913 Webster]

Definition of 'Impossible'

From: GCIDE
  • Impossible \Im*pos"si*ble\, a. [F., fr. L. impossibilis; pref. im- not + possibilis possible. See Possible.] 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. [1913 Webster]
  • With men this is impossible; but with God all things are possible. --Matt. xix. 26. [1913 Webster]
  • Without faith it is impossible to please him. --Heb. xi. 6. [1913 Webster]
  • Impossible quantity (Math.), an imaginary quantity. See Imaginary.
  • Syn: See Impracticable. [1913 Webster]