Where does “susurrandus” come from?

susurrandus (Latin) comes from Latin susurrō, from Latin susurrus, from Proto-Indo-European swēr- — heavy.

Definitions

Step	Language	Word	Meaning
1	Latin	susurrō	—
2	Latin	susurrus	whisper; murmur
3	Proto-Indo-European	swēr-	heavy

susurrandus — Etymology, Origin & Word History | Etymology Explorer