What is another word for "mutter"?

Roget's Thesaurus (1911) lists these synonyms for "mutter": abuse, abusive, ban, bark, big, bluster, bully, clinch, commination, comminatory, curse, defiance, defiant, defy, denunciation, double, fist, fulminate, fulmination, gathering, gnarl, growl, hold, intimidate, intimidation, keep, look, menace, minacious, minacity, minatory, ominous, out, peril, shake, snarl, stare, talk, the, threat.