glib

GLIBadj

Meaning smooth and quick with words but shallow or insincere

Memory hook words GLIDE off his LIPS. Victor’s words glide off his lips like skates on ice: fast, smooth and with nothing underneath. His talk is glib.

The salesman had a glib answer for every question but never once looked us in the eye.

In context Her apology sounded glib: she rattled it off in two seconds, flashed a smile and went right back to her game.

Similar slick, smooth-talking, facile, superficial

Opposite sincere, thoughtful, earnest