marmonner

to mumble

m a ʁ . m ɔ . n e
marmonn to mumble + er Infinitive
verb Rare #45,102
to mumble Often used when speaking quietly and unclearly, sometimes to complain under your breath.
FR: Il commence à marmonner quelque chose, mais je ne comprends pas.
EN: He starts to mumble something, but I don’t understand.

Tom a commencé à marmonner.

Tom started mumbling.

Tom s'est mis à marmonner.

Tom started mumbling.

On ne peut pas marmonner comme ça.

We can't just mutter like that.

— Funny Games (1997)

Arrête de marmonner.

Stop mumbling.