Word: 
Similar-sounding words in the dictionary:
4 letters:
brum
5 letters:
brumm
6 letters:
bramer, bremer, brimer, brumer, brymer, bummer
7 letters:
brammer, brehmer, bremmer, brimmer, brommer, brother, brucker, brugger, brunger, brunner, drummer
8 letters:
bruemmer