(imp. & p. p.) of Mumble.

Greek to one ambiguous anaudic aphasic aphonic bashful beyond understanding blurred breathless breathy choked choking confused conscious coy croaking demure digressive discursive disjointed drawling drawly dumb dumbfounded dumbstricken dumbstruck dysphonic faltering garbled guttural halting harsh hawking hesitating hoarse illogical impenetrable implicit implied incognizable incoherent incomprehensible indistinct inferred inscrutable irrational jumbled lisping maundering mispronounced mixed-up mousy muddled muffled mum mumbled mumbling mute muzzy nasal numinous past comprehension quavering rambling scrambled self-conscious shaking shaky shamefaced shamefast shy silent skittish snuffling speechless stammering stifled strangled stricken dumb thick throaty timid timorous tongue-tied tongueless tremulous twangy unclear unconnected undeclared unexpressed unfathomable unintelligible unknowable unsaid unsearchable unspoken unuttered velar voiceless wild wordless