v. Third-person singular simple present indicative form of muck.
The Century Dictionary and Cyclopedia
n. See mux.
Word Usage
"** PT has to admit that his sense of propriety about vehicles for high mucky-mucks is informed by his youthful memories of Montreal's Cardinal Archbishop Paul-Émile Léger, who tooled around his diocese, sans driver, in a humble Chevrolet Corvair."