Crossword Genius

Smooth-talking (4)

Ross

I think it could be either:

oily

glib

'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" .)

I've seen this clue in The Guardian, the USA Today, The Wall Street Journal and the Newsday.
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