late 14c., resouning, "sonorous," present-participle adjective from resound (v.). Figurative use from 1630s (Milton's resounding grace). Related: Resoundingly.
Entries linking to resounding
resound v.
late 14c., resownen, resounen, of a place, "re-echo, sound back, return an echo; reverberate with," from Anglo-French resuner, Old French resoner "reverberate" (12c., Modern French résonner), from Latin resonare "sound again, resound, echo" (source also of Spanish resonar, Italian risonare), from re- "back, again" (see re-) + sonare "to sound, make a noise" (from PIE root *swen- "to sound").
With unetymological -d- from mid-15c. (compare sound (n.1)). From 1520s of things. Related: Resounded; resounding.