Glib – Speaking confidently but insincere and without depth
He was good at ad-libbing (glib) and so confident, until he was asked to speak on something deeper and then we found out he was without depth.
Examples of glib in a sentence
The way he speaks with glib promises that he will never follow through on, it's amazing that he has any supporters at all.
I decided not to go to Janes party because I just couldn’t stand another evening of glib chatter.
I hated how he was so glib about such a traumatic event.