on the contrary

on the contrary

Opposite to what someone has just said. Our business is not receding. On the contrary, we are experiencing a very robust level of growth. A: "Don't you hate Brussels sprouts?" B: "On the contrary, I think they can be very tasty—if they're cooked the right way."
See also: contrary, on
Farlex Dictionary of Idioms.

on the contrary

It's the opposite, as in Is his shoulder hurting?-On the contrary, it's all better, or We thought you didn't like opera.-On the contrary, I love it. This phrase, at first put as by or for or in the contrary, dates from the late 1300s; on has been used since the mid-1800s.
See also: contrary, on
The American Heritage® Dictionary of Idioms by Christine Ammer.

on the ˈcontrary

,

ˌquite the ˈcontrary

used to emphasize that the opposite of what has been said is true: It’s not that I don’t like him — on the contrary, he seems very pleasant. I don’t find him funny at all. Quite the contrary.
See also: contrary, on
Farlex Partner Idioms Dictionary

on the contrary

In opposition to what has been stated or what is expected: I'm not sick; on the contrary, I'm in the peak of health.
See also: contrary, on
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • to the contrary
  • (one's) heart goes out to (someone)
  • in (one's) prayers
  • in prayers
  • (one's) heart bleeds for (someone)
  • bleed
  • a burnt child dreads the fire
  • burnt
  • Brussels
  • joke is on