mussitation

[ muhs-i-tey-shuh n ]
/ ˌmʌs ɪˈteɪ ʃən /

noun

silent movement of the lips in simulation of the movements made in audible speech.
muttering; mumbling; murmuring.

Origin of mussitation

First recorded in 1640–50, mussitation is from the Late Latin word mussitātiōn- (stem of mussitātiō). See mussitate, -ion

Medical definitions for mussitation

mussitation
[ mŭs′ĭ-tāshən ]

n.

Movement of the lips as if speaking but without sound.