Mutter

mut′ėr, v.i. to utter words in a low voice: to murmur: to sound with a low, rumbling noise.— v.t. to utter indistinctly.— ns. Mutt′er ( Milt. ), a murmuring; Mutterā′tion , act of muttering or complaining; Mutt′erer ; Mutt′ering .— adv. Mutt′eringly , in a muttering or grumbling manner: with indistinct articulation. [Prob. imit., like prov. Ger. mustern ; L. muttīre .]