Adverb:

अनर्गलता से, असंबद्ध या असंलग्‍न रूप में, असंगति से,

incoherently's Usage Examples:

mumbleell to the floor mumbling incoherently sounding like a lunatic.

Cossacks, hussars, and ragged Russian prisoners, who had come running from both sides of the road, were shouting something loudly and incoherently.

babbled incoherently and would foam at the mouth.

She incoherently described the depths of the forest, her feelings, and a talk with a beekeeper she met, and constantly interrupted her story to say: No, I can't!

So you see there can be no question about- said Nicholas incoherently and blushing.