1. Mud; mire.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• ludge,
• pladge,
• sauge,
• sludged,
• pldge,
• sludg,
• spluge,
• sluggy,
• aledge,
• sausge,
• slurge,
• sauage,
• sluged,
• shulge,
• sourge,
• sumdge,
• sludges,
• lugge,
• slugde,
• sluge

• sledge,
• sled dog.

The adjective form of the word "sludge" is "sludgy".

The plural of the "sludge" can be the "sludges".

The singular of the "sludge" can be the "sludge".