Unlike me, Bournazian isn't a grumbler, but he went ballistic on the football-band issue.
From the timesunion.com
A couple of months of that could turn anyone into a chronic grumbler.
From the al.com
The question I'd want to ask is why a grumbler gets you down?
From the markvernon.com
He is a bit of a grumbler tho.
From the him.uk.msn.com
George's grandma is such a groucher, a grumbler and a griper that he decides to mix up some medicine to try to cure her of her nastiness.
From the guardian.co.uk
Wasn't Randy Moss and the New England Patriots supposed to be one of the all-time mismatches, of a me-first grumbler and the ultimate team of team-firsters?
From the lohud.com
Is a grumbler more likely to become positive if in a room of positive people, or a positive person more likely to become a grumbler if in a room of grumblers?
From the markvernon.com
More examples
Whiner: a person given to excessive complaints and crying and whining