impossible

Universal Words adjective 1 that cannot exist or be done; not possible: almost / virtually impossible * It's impossible for me to be there before eight. * It's impossible to prove. * I find it impossible to lie to her. * an impossible dream / goal OPPPOSSIBLE 2 very difficult to deal with: I've been placed in an impossible position. * Honestly, you're impossible at times! 3 (the impossible) noun [sing.] a thing that is or seems impossible: to attempt the impossible impossibility noun [U,C,usually sing.]: the sheer impossibility of providing enough food for everyone * a virtual impossibility impossibly adverb: an impossibly difficult problem (= impossible to solve) * He was impossibly handsome (= it was difficult to believe that he could be so handsome).