phenomenal (adjective) phenomenal: astounding, exceptional
Sinonime: blurred, dumb, faltering, halting,
hesitant, hesitating, inaudible, incoherent,
incomprehensible,
indistinct, maundering, muffled, mumbled, mumbling, mute,
obscure,
reticent, silent, speechless, stammering, tongue-tied,
unclear, unintelligible, unspoken, unuttered, unvocal, unvoiced,
vague, voiceless, wordless
Antonime: articulate, communicative