’This is a pretty good tree,’ he observed admiringly with proprietary gratitude.
He liked to encircle her ankle loosely with his fingers as he played cards with Nately, Dunbar and Hungry Joe, to lightly and lovingly caress the downy skin of her fair, smooth thigh with the backs of his nails or, dreamily, sensuously, almost unconsciously, slide his proprietary, respectful hand up the shell-like ridge of her spine beneath the elastic strap of the top of the two-piece bathing suit she always wore to contain and cover her tiny, long-nippled breasts.
There are no more uses of "proprietary" in the book.
Show samples from other sources
Tylenol is a proprietary drug that can be purchased in generic form as acetaminophen.
My employment contract prohibits by sharing proprietary information with people outside of the firm.