What context can I use each word in?
Learn when and how to use these words with these examples!
unbelievable
Example
The magician's trick was so unbelievable that the audience gasped in amazement. [unbelievable: adjective]
Example
It's unbelievable that he managed to finish the marathon in under two hours. [unbelievable: adjective]
impossible
Example
It's impossible to fly without wings. [impossible: adjective]
Example
I can't finish this project by myself, it's impossible. [impossible: adjective]
Good things to know
Which word is more common?
Impossible is more commonly used than unbelievable in everyday language. Impossible is a strong word that conveys a clear meaning, while unbelievable is less common and may be replaced by other synonyms such as incredible or astonishing.
What’s the difference in the tone of formality between unbelievable and impossible?
Both unbelievable and impossible are neutral in terms of formality and can be used in both formal and informal contexts.