slopped

Slopped is the past tense of slop, which means to spill or splash liquid carelessly.

If coffee slopped over the rim of your mug, it splashed out messily.

The verb also applies to feeding animals, especially pigs, with kitchen scraps or swill: He slopped the hogs every morning before dawn.

By extension, slopped can describe moving through wet or muddy conditions: We slopped through the flooded parking lot.