Mutterer

mut·ter  (mtr)

v. mut·tered, mut·ter·ing, mut·ters

v.intr.

1. To speak indistinctly in low tones.

2. To complain or grumble morosely.

v.tr.

To utter or say in low indistinct tones.

n.

A low grumble or indistinct utterance.

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[Middle English muttren, possibly from Latin muttre.]

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mutter·er n.

Thesaurus

Noun

1.

mutterer - a person who speaks softly and indistinctly mumbler, murmurer speaker, talker, verbaliser, verbalizer, utterer - someone who expresses in language; someone who talks (especially someone who delivers a public speech or someone especially garrulous); "the speaker at commencement"; "an utterer of useful maxims"