Where does “admurmurandus” come from?

admurmurandus (Latin) comes from Latin admurmuror, from Latin murmurō, from Latin murmur, from Proto-Indo-European mormur-.

Definitions

Step	Language	Word	Meaning
1	Latin	admurmuror	Alternative form of admurmurō
2	Latin	murmurō	—
3	Latin	murmur	murmur, murmuring; humming, roaring, growling,...
4	Proto-Indo-European	mormur-	—

admurmurandus — Etymology, Origin & Word History | Etymology Explorer