sprinkle, spray, splash, slosh around, squelch, splatter, quench, bespatter, slush around, crush, splosh, squeeze, dash, squash, plash, strike, spatter, slush, swill, spill, swash, squish, quell, mash, slop.
Well, put some water in the barrel and slosh it around- it'll come out sweet enough for a mess or two.
Outside I could hear the thrash of the sea and the slosh of spent waves coursing through the deck gutters.
My shoes slosh now.