Mumble.
Resmungar.
bafouiller, bredouiller, ânonner, bégayer, troubler, barboter, baragouiner, cafouiller, balbutier, marmotter, murmurer, embrouiller, chuchoter, susurrer, grommeler, grogner, bougonner, grognasser, grognonner, gronder, maugréer, ronchonner, rouspéter, protester, semoncer, critiquer, pester, mâchonner, mâchouiller, susurrer
Vogais: aoe
Consoantes: mrmnnr
marner, mariner, marinier, murmurer, marinière, murmure.