I think I'm more clumsy than both of them, probably combined.

Well, I AM Tonks, who was very clumsy ;)

Neville's not clumsy.Forgetful,yes, clumsy,no

Neville melts a few cauldrons, falls off a broom, drops EVERYTHING, manages to seriously hurt himself numerous times, etc.
Bella slips a few times.

Bella, clearly. She can't stand up without Eddie having to hold her by the hand to make sure that she doesn't fall and end up in stitches.

1. Bella
2. SEAMUS
3. Neville

In the books, because in the movies Bella isn't that clumsy

It's quite sad, actually.

*nods head* Yeah...I'm just terrible.

tonks

It is one of her only defining characteristics. You know, besides the manipulation of those around her and habitual complaining even when life is pretty good for her.