adj. glib·ber, glib·best
1. Performed with a natural, offhand ease: was fascinated by his unfailingly glib conversation.
2. Given to or characterized by fluency of speech or writing that often suggests insincerity, superficiality, or a lack of concern: criticized him for being glib about something so serious.
[Possibly of Low German origin; see ghel-2 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.