Yossarian nodded perfunctorily, and the chaplain’s breath quickened in anticipation as he made ready to join his will power with Yossarian’s in a prodigious effort to rip away at last the voluminous black folds shrouding the eternal mysteries of existence.
There are no more uses of "perfunctory" in the book.
Show samples from other sources
She gave us menus and a perfunctory smile.
Her perfunctory apology did little to ease my annoyance.