"really" and "quite".
For instance, consider the difference between:-
- That's good (possibly it's good, or just dismissive)
- That's quite good (a little effusive)
- That's really quite good (effusive)
- That's really good (overly effusive)
- Really, that's quite good (condescending, but a good effort for someone of your calibre).
- Really, that's good (it's bad)
- Really. (disbelief / I disagree / astonishment)
- Really? (are you quite mad?)
- Quite. (I agree wholeheartedly)
- Mad (mad)
- Quite mad (bonkers)
- Really mad (angry)
Mind you I am English.