Douse (verb)

1. Put out (a fire or light) by pouring liquid on it.
2. Dampen or wet (something) by pouring liquid over it.
3. To extinguish or put an end to something.

Origin:

Middle english: from old french deusier, from deus "damp", from latin dampnus, from dampnum "damage".

Examples:

1. He doused the campfire with water before going to bed.
2. She doused her head with cold water to wake herself up.
3. The curtains were doused in gasoline and set on fire.
4. He doused the flames with a fire extinguisher.
5. The partygoers doused the birthday boy with water and confetti.