Generally having to do with anything related to theatre, especially the more flamboyant parts of the stage life. Taken from the title of the play "Tartuffe" by Moliere. Can be used as a Noun, Verb, Adjective or Adverb.
N. "Tell Tartuffe over there to rehearse his lines better."
V. "Oh no, it six o' clock and I have to Tartuffe!"
Adj. "That scarf you're wearing is very Tartuffe, Jon."
Adv. "He went Tartuffingly across the stage in act I."