unbelievable

Meanings

1. 1
   adj

   Not to be believed.

   ‘Come on, girls,’ said Steve, ‘be honest, we won.’ / ‘Yeah,’ said Raymond, ‘we let you off because you’re girls.’ / ‘You’re unbelievable,’ said Liz. / ‘Well, if we’re unbelievable,’ said Steve, ‘then you’re unbelievabler.’

2. 2
   adj

   Amazing, astonishing; so surprising that one is almost, or figuratively, unable to believe.

   The most unbelievable thing happened to me today!

3. 3
   adj

   Implausible or improbable.

   His excuse seems rather unbelievable.

4. 4
   adj

   beyond belief or understanding

5. 5
   adj

   having a probability too low to inspire belief

Etymology

From un- + believable.