slake - Dictionary definition and meaning for word slake
focus on the 'lake' part of this word..so you can say that you want to satisfy your thrist after seeing the water in that lake .
Lake ... When camel, which is going through desert, finds a lake. What will it do? Just drink the water, which takes its thirst away.
Think slacken. Slaking a desire would be slackening it.
S(ee)+LAKE = to QUENCH or to SATIATE, SATE.
Remember slaked lime. Slaked lime is formed when quick lime is mixed with water.