All of the words given are examples of onomatopoeia - words that describe exactly the sound they refer to (like 'bang' and 'clap').
Some good onomatopoeic words for liquid are:
drip, drop, plop - these would describe single droplets of liquid hitting the floor individually, as from a loose faucet/tap.
drum, pit-a-pat, patter - like the droplets above but when many come down at once, like with rain.
sploosh, splosh, splash - these would describe larger quantities of liquid, like spilling a drink.
Hope this helps. I'm sure there are more, too.