GLIBBEST is a playable word

glib Scrabble® Dictionary

adjective
glibber, glibbest
fluent
(adverb) glibly
126 Playable Words can be made from "GLIBBEST"
   2-Letter Words (12 found)
   6-Letter Words (7 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)