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.
An impossibility. [Obs.] "Madam," quoth he, "this were an impossible!" Chaucer.
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