nonspeak

noun

1. Speech that is intended to satisfy a needed response, yet lacking in any real pertinent information; speech about nothing, empty words; useless talk or babble.“Most of the action reports are carefully worded statements by ship's officers who have been trained in the art of nonspeak.”
2. An aversion to speaking; speechlessness.“By nine, Hodson said, boys have learned to be incurious about other people; they aren't inclined to conversation; they aren't interested in discovering more about other people. They have already learned nonspeak and nonlisten.”