ad-murmŭro — Lewis & Short
ad-murmŭro, āvi, ātum, 1, v. n.,
I to murmur with approbation or disapprobation (cf. acclamo):
quam valde universi admurmurārint,Cic. Verr. 2, 5, 16:
admurmurante senatu neque me invito,id. Att. 1, 13, 2.—Impers.:
cum esset admurmuratum,Cic. de Or. 2, 70, 285.