Introduction to the Glib

Glib, I well know, is not a noun.  It's an adjective, and it's one of those words that you kind of know what it means but if someone pressed you for a definition right now you would be a little challenged perhaps to provide a precise definition, and that's kind of frustrating, at least for me, because I love precise definitions.  Glib describes someone (or perhaps the way someone talks or writes) in which the person has a lot to say and it flows pretty easily but there isn't much depth.  It's insincere.  Glib can come in the form of an adverb (glibly, as in you write glibly, which is awkward I think) and in the form of a noun (glibness, the speech was full of glibness, which is also awkward).  Glib comes from the Dutch glibberig, meaning 'slippery," and from the German glibberig, meaning 'slimy,' and I guess those are not very positive connotations.  At any rate, I know well what glib is, because...well, I am glib.