(adj.) the state of pretence that one is socially better than one actually is, and will alter prnounciation of one's name, address and speech in an (usually fairly convincing) attempt to appear upper class. Taking from leading protagonist of BBC sitcom "Keeping up appearances".
The old lady was a bit of a Hyacinth Buckét.
by Kung-Fu Jesus May 03, 2004
Can you define these popular missing words?