
- Certainly.
- Sure.
The Big Bang Theory Season 8, Episode 21

I CERTAINLY could.
The Big Bang Theory Season 12, Episode 7

You CERTAINLY don't need it.
Game of Thrones Season 2, Episode 3

And I am CERTAINLY not
the Mother of Dragons.
Game of Thrones Season 6, Episode 4

No, you most CERTAINLY are not.
The Big Bang Theory Season 4, Episode 21