Foul

The sailor had to clean the foul decks of the ship after a storm.

The foul rag that he used to clean the car only made it dirtier.

The ship struggled to navigate through the foul fog.

The foul fog obscured the view of the harbor from the ship's deck.

The singer's voice sounded foul during the live performance.

The car's engine started running foul, causing it to sputter and stall.

The foul smoke from the burning forest obscured the sun and created a gloomy atmosphere.