improbable

adj

Etymology: Borrowed from Latin improbābilis. By surface analysis, im- + probable.

1. Not likely to be true.

   “It's highly improbable that aliens abducted you.”

   “Improbabile, that cannot be prooued, improbable.”

2. Not likely to happen.

   “Due to the loss of power, it is improbable that we will begin on time.”