quite the reverse
Definitions
Used to emphasize that the opposite of what was previously stated is true.
Expressing a complete contradiction or the exact contrary of a preceding claim.
Examples
I thought the movie would be boring, but it was quite the reverse.
Many people assume he is arrogant, but he is quite the reverse in private.
Synonyms
on the contrary quite the opposite just the reverse far from it conversely
Antonyms
exactly the same in agreement the very same likewise correspondingly