talk incoherently

Lady Lyons was flattered and pleased, and, for a moment or two, did nothing but talk incoherently about the compliment.

Peter Bligh reeled dizzily in his walk and began to talk incoherently—a thing I had never heard him do before in all his life.

At these periods he would talk incoherently, Agatha being able to catch only a word now and then.

Sam knew hardly anything, and rarely ever spoke at all except to talk incoherently in fits of delirium.

She was limp and half senseless, though she continued to moan and talk incoherently.