Noah Webster
Assuage
ASSUA'GE, verb transitive
To soften, in a figurative sense; to allay, mitigate, ease or lessen, as pain or grief; to appease or pacify, as passion or tumult. In strictness, it signifies rather to moderate, than to quiet, tranquilize or reduce to perfect peace or ease.
ASSUA'GE, verb intransitive To abate or subside.
The waters assuaged. Genesis 8:1.
But I apprehend the sense is, the waters were checked; Hebrew.