verb (used without object), le·nit·ed, le·nit·ing.
to undergo lenition; be pronounced with weakened articulation, as when the consonant sound p changes to b, b to v, or v to w.
verb (used with object), le·nit·ed, le·nit·ing.
to cause (a consonant sound) to lenite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019