Synonyms for Slosh (same or very similar meaning)
WordNet sense 1 (make a splashing sound):
slush, splash, sploshWordNet sense 2 (walk through mud or mire):
slop, squelch, squishWordNet sense 3 (spill or splash copiously or clumsily):
slosh around, slush aroundFrom the ODE community, based on WordNetadd/edit