How to pronounce fouler:
Example: "A disgusting smell"
Example: "A foul odor"
Example: "A dirty fighter"
Example: "Foul (or dirty) copy"
Example: "Had a filthy mouth"
Example: "The industrial wastes polluted the lake"
Example: "The leaves clog our drains in the fall"
Example: "The townspeople defiled the river by emptying raw sewage into it"
Example: "Foul the water"