What is the meaning of Glib?

Having a ready flow of words but lacking thought or understanding; superficial; shallow.

Smooth or slippery.

Artfully persuasive but insincere in nature; smooth-talking, honey-tongued, silver-tongued.

Snarky or unserious in a disrespectful way.

To make smooth or slippery.

A person's mouth or tongue.

A mass of matted hair worn down over the eyes, formerly common in Ireland.

To castrate; to geld; to emasculate.

mud, mire

Source: wiktionary.org