nieprzyjemny hałas

But they make these unpleasant noises because they don't have the facts.

"I hope to goodness you don't hear any unpleasant noises in the night!"

Her father, the business tycoon, does make some unpleasant noise in the background, but gives up soon enough.

The strange, but not unpleasant, noise increased as she ascended.

Then there was silence, the special kind that you get after a really unpleasant noise.

Only trouble is that the patient makes the most unpleasant noises.

It moved a bit, and then flowed back, with an unpleasant oozing noise.

The bog made a series of most unpleasant sucking noises.

That unpleasant but very ordinary noise was suddenly joined by others.

The doctor was readying himself to take charge of the situation when the unpleasant noise simply stopped.