defervesce
[dee-fer-ves, def-er-]
verb (used without object), de·fer·vesced, de·fer·vesc·ing.
to undergo defervescence.
Origin of defervesce
First recorded in 1855–60; back formation from defervescence
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019