But as a noun. People who use it as a verb annoy me no end.
According to the Oxford English Dictionary, "disrespect" has been used as a verb since 1614.
Puritan divine and Cambridge don Joseph Hall wrote of the "two masters" passage of the Gospel: "If he love the one, he must disrespect the other."
Victorian novelist George Meredith wrote: "You will judge whether he disrespects me."
Thomas Paine wrote participially in "The Rights of Man" as follows: 'Reflecting how wretched was the condition of a disrespected man."
It is a perfectly good, direct and descriptive English verb.