Then the process of undressing began, one at a time, for there was not room enough in the igloo for all to undress at once.
"My Attainment of the Pole"
Frederick A. Cook
He took off his jacket and put it on again, he stood uncertainly in the middle of the floor, and wondered whether he ought to undress or no.
"Fortitude"
Hugh Walpole
She was in an undress, and her hair was down over her face.
"Marital Power Exemplified in Mrs. Packard's Trial, and Self-Defence from the Charge of Insanity"
Elizabeth Parsons Ware Packard