i Register
In some senses, aslake is marked as archaic, obsolete, rare. Watch for register when choosing this word.
verb
To abate; diminish.
To moderate; mitigate; appease; satisfy.
The beast that prowls about in search of blood, / Or reptile that within the treacherous brake / Waits for the prey, upcoiled, its hunger to aslake. ― Southey, Paraguay.