Adjective
scintillating - Describing someone or something that is exceptionally witty and entertaining, and is intellectually or emotinally stimulating.

Her scintillating conversation captivated those she talked to at the dinner party, leaving them laughing and enjoying themseles.
hackneyed - (of a phrase or idea) lacking significance through having been overused; unoriginal and trite

Ricky was ready to tell his boss he was completely prepared for the job, but he wanted to avoid being told a hackneyed expression like "make sure you have his ducks in a row."