Synonyms of incoherent

1 Syllable
dumb, hushed, wild, mute
2 Syllables
rambling, puzzling, formless, dumbest, silent, jumbled, wordless, dumber, breathless, muddled, mumbling, parter, half-done, muffled, husher
3 Syllables
silentious, disjointed, off-the-wall, mismatched, stuttering, incongruous, stammering, uneven, confused, wandering, faltering, indistinct, far-fetched, delirious, maundering, muttered, tongue-tied, unvocal, farfetched, discordant
4 Syllables
irrational, incomplete, unreasoning, tampered-with, unadapted, disconsonant, discontinuous, disordered, cockamamie, disconnected, fragmentary, unconnected, inconsistent
5 Syllables
unreasonable, incompatible, inconformable, incohesive, uncoordinated, unexecuted, unconsummated, unaccomplished
6 Syllables
inarticulate, unintelligible, incomprehensible, indistinguishable
7 Syllables
uncommunicative