unvocal

incoherent

blurred dumb faltering halting hesitant hesitating inaudible incomprehensible indistinct maundering muffled mumbled mumbling mute obscure reticent silent speechless stammering tongue-tied unclear unintelligible unspoken unuttered unvoiced vague voiceless wordless

articulate communicative

disjointed incomprehensible incongruous irrational jumbled muddled puzzling rambling uneven

breathless confused disconnected discontinuous discordant disordered dumb faltering inarticulate incohesive inconsistent indistinct indistinguishable maundering muffled mumbling mute muttered raving stammering stuttering tongue-tied uncommunicative unconnected uncoordinated wandering wild

connected intelligible understandable

coherent