improbable

Meanings

1. 1
   adj

   Not likely to be true.

   It's highly improbable that aliens abducted you.

2. 2
   adj

   Not likely to happen.

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

3. 3
   adj

   too improbable to admit of belief

4. 4
   adj

   not likely to be true or to occur or to have occurred

5. 5
   adj

   having a probability too low to inspire belief

Etymology

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