1. not possible; unable to be, exist, happen, etc.
2. unable to be done, performed, effected, etc
Impossible is when the Red Sea is in front of you and the Egyptians are behind you.
Impossible is when you have just five loaves of bread and two fishes to feed 5 thousand people.
Impossible turning to reality is when you move from broke and depressed to becoming a BOSS in a position you were not qualified for but you now excel in.