swash

(noun) the movement or sound of water. Examples: "The swash of waves on the beach."

(verb) make violent, noisy movements.

(verb) dash a liquid upon or against. Synonyms: spatter, splatter, plash, splash, splosh. Examples: "The mother splashed the baby's face with water."

(verb) show off. Synonyms: boast, tout, shoot a line, brag, gas, blow, bluster, vaunt, gasconade.

(verb) act in an arrogant, overly self-assured, or conceited manner. Synonyms: swagger, bluster.