Mutter

bručení

(instance of muttering)

mručení

(instance of muttering)

mumlání

(instance of muttering)

zabručení

(instance of muttering)

zamručení

(instance of muttering)

zamumlání

(instance of muttering)

bručet (pod vousy)

(speak under one's breath)

mručet

(make a low sound)

mumlat

(speak under one's breath)

mumlat

(speak incoherently)