wispern

Etymology
17th century, from, chiefly displacing the above variant, from and , ultimately of  origin (lautmalend).

The r-form could be a late alteration, but could also be old in view of 🇨🇬, whence 🇨🇬.

Verb

 * 1) to whisper; to make a whispering sound (most often in a mysterious or eerie way)

Usage notes

 * The more general word for “to whisper” (to speak without voice) is.