Sonorous (8)
I believe the answer is:
resonant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sonorous</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for resonant that I've seen before include "Tending to prolong sound, echoing" , "Booming" , "Evoking memories" , "Continuing to sound clearly and deeply" , "Deep, clear and continuing to sound or reverberate" .)