IMPOSSIBLE
impossible
(adjective) not capable of occurring or being accomplished or dealt with; āan impossible dreamā; āan impossible situationā
impossible, inconceivable, out of the question, unimaginable
(adjective) totally unlikely
impossible, unacceptable
(adjective) (used of persons or their behavior) not acceptable or reasonable; āimpossible behaviorā
impossible
(noun) something that cannot be done; āhis assignment verged on the impossibleā
Source: WordNet® 3.1
Etymology
Adjective
impossible (comparative more impossible, superlative most impossible)
Not possible; not able to be done or happen.
(colloquial, of a person) Very difficult to deal with.
(math, dated) imaginary
Synonyms
• unpossible (rare)
Antonyms
• (not able to be done or happen): possible, inevitable
Noun
impossible (plural impossibles)
(obsolete) an impossibility
Source: Wiktionary
Im*pos"si*ble, a. Etym: [F., fr. L. impossibilis; pref. im- not +
possibilis possible. See Possible.]
Definition: 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.
With men this is impossible; but with God all things are possible.
Matt. xix. 26.
Without faith it is impossible to please him. Heb. xi. 6.
Impossible quantity (Math.), an imagnary quantity. See Imaginary.
Syn.
– See Impracticable.
Im*pos"si*ble, n.
Definition: An impossibility. [Obs.]
"Madam," quoth he, "this were an impossible!" Chaucer.
Source: Webster’s Unabridged Dictionary 1913 Edition