superficially polite but actually rude; rude under a veneer of politeness; courteous on the surface but insolent at heart
superficially polite but actually rude; rude under a veneer of politeness; courteous on the surface but insolent at heart
to have a surreptitious sexual relationship with; to have an illicit love affair with
overdone politeness; polite to a fault; feigned politeness