Smooth-talking (4)
'smooth-talking' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oily that I've seen before include "Oleaginous" , "covered in grease" , "Viscous" , "Unctuous" , "Like a lot of fish" .)
'smooth-talking' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for glib that I've seen before include "Insincerely fluent" , "Smooth-talking" , "smooth" , "Shallowly articulate" , "Only superficially plausible" .)