glib
/ɡlɪb/Definitions
1. adjective
lacking in seriousness or sincerity; insincerely flattering or complimentary
“The politician’s glib response to the crisis only fueled public anger.”
2. noun
a glib person
“The glib salesman tried to convince us to buy the product.”
3. verb
to speak or act glibly
“She glibly denied any wrongdoing, but the evidence suggested otherwise.”