1 lively

2 vivacious

3 brisk

4 active

5 (chemistry) reactive

1 to splash

2 to spill

3 rough and coarse

4 brutish

1 (of droplets, sparks etc) to fly about in all directions

2 to splatter everywhere

1 to make an unreasonable scene

1 lit. to pour cold water on

2 fig. to dampen one's enthusiasm

1 water once spilt cannot be retrieved (idiom); irreversible change

1 downpour (idiom)