Emily Dickinson Lexicon

impossible, adj. [Fr. < L.] (webplay: God, men, possible, should).

1. Unfeasible; impracticable; not accessible; not able to be done.
2. Unbearable; not endurable; [fig.] too heavy to lift.
3. Phrase. “Impossible to feign”: unfeasible to produce; a person cannot feign; one cannot pretend to have; a mortal being cannot simulate.