Synonyms of unintelligible

1 Syllable

greek

2 Syllables

vague, jumbled, secret, delphic, wordless, vaguest, muddled, unclear, vaguer, muzzier, muzzy

3 Syllables

meaningless, incongruous, fathomless, sphinxlike, tenebrous, obscure, indistinct, unvocal, opaque, obscurer, uncertain, ambiguous

4 Syllables

unknowable, multivocal, enigmatic, inscrutable, ungraspable, polysemous, insensible, poker-faced, disconsonant, equivocal, illegible, disconnected, inexplicit, unexplicit, incoherent, unreadable

5 Syllables

unaccountable, unfathomable, incognizable, supernatural, undefinable, inexplicable, unexplainable, impenetrable, problematical, imperceivable, supersensible, inexplainable

6 Syllables

indecipherable, uncomprehensible, inarticulate, undiscoverable, incomprehensible, amphibological, undecipherable