1. Noise, clamor, din, hubbub, racket refer to unmusical or confused sounds. Noise is the general word and is applied equally to soft or loud, confused or inharmonious sounds: street noises. Clamor and hubbub are alike in referring to loud noises resulting from shouting, cries, animated or excited tones, and the like; but in clamor the emphasis is on the meaning of the shouting, and in hubbub the emphasis is on the confused mingling of sounds: the clamor of an angry crowd; His voice could be heard above the hubbub. Din suggests a loud, resonant noise, painful if long continued: the din of a boiler works. Racket suggests a loud, confused noise of the kind produced by clatter or percussion: He always makes a racket when he cleans up the dishes. 2. See sound¹.

Did you mean arse about?