on the contrary
US /ɑn ðə ˈkɑntreri/
UK /ɑn ðə ˈkɑntreri/

1.
aksine, tam tersine
used to intensify a denial of what has just been implied or stated by suggesting that the opposite is the case
:
•
“You didn’t like the movie, did you?” “On the contrary, I loved it!”
“Filmi beğenmedin, değil mi?” “Aksine, bayıldım!”
•
Some people think he’s arrogant, but on the contrary, he’s very humble.
Bazı insanlar onun kibirli olduğunu düşünür, ama aksine, o çok mütevazıdır.