Meaning of IMPOSSIBLE in English
adj. 1 not possible; that cannot occur, exist, or be done (such a thing is impossible; it is impossible to alter them). 2 (loosely) not easy; not convenient; not easily believable. 3 colloq. (of a person or thing) outrageous, intolerable. impossibly adv.
[ ME f. OF impossible or L impossibilis (as IN-(1), POSSIBLE) ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012