Wordnerd

Slake--transitive verb--to satisfy, to quench, to extinguish 2) to cause to lessen, to make less active or intense

"I slaked my thirst with a giant mug of Flying Fish beer followed by a Demerol chaser."

"Ukranian forces slaked the Russian army during a counter offensive at Kharkiv."

This is a Middle English word, slaken, slakken which means to loosen, lessen, or mitigate.