glib (
http://definr.com/glib)
adj 1: marked by lack of intellectual depth; "glib
generalizations"; "a glib response to a complex
question"
2: having only superficial plausibility; "glib promises"; "a
slick commercial" [syn:
pat,
slick]
3: artfully persuasive in speech; "a glib tongue"; "a
smooth-tongued hypocrite" [syn:
glib-tongued,
smooth-tongued]