unlikely, improbable
Rain is unlikely.
It seems highly unlikely.
La dichiarazione sembra improbabile.
The statement seems unlikely.
Ma la possibilità sembra improbabile.
But the possibility seems unlikely.
It's so unlikely.
Penso che sia molto improbabile rivedere la mia moto rubata.
I think it’s very unlikely that I’ll ever see my stolen motorcycle again.
Era incredibilmente improbabile che un’astronave di passaggio ne avesse a bordo.
It was incredibly unlikely that a passing spaceship would have one on board.