Thick, viscous liquid often resulting from an industrial process or sewage treatment.

A soft, wet matter that lacks structure.

मुलायम गंदगी

English Usage: After the heavy rains, the ground was covered in ripe sludge.

Hindi Usage: तीव्र बरसात के बाद, जमीन पर मुलायम गंदगी का ढेर लग गया।