Words at Play : Simple but Intelligent Word Choices
Definition:
said or done too easily or carelessly; marked by ease in speaking to the point of being deceitful
Words It Might Replace:
careless; insincere
Example:
"A time may come when Tiger Woods will be glib and ebullient and full of witty observations about golf. But I doubt it." David Jones, pennlive.com, April 15, 2011