Crossword Genius

Fluent, being liberal at heart (4)

Ross

I believe the answer is:

glib

I'm a little stuck... Click here to teach me more about this clue!

'fluent' is the definition.
(I've seen this in another clue)

'being liberal at heart' is the wordplay.
'GLIB' is hidden within the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for glib that I've seen before include "Slippery in speech" , "Having only superficial plausibility" , "slick in speech" , "Fluent but evasive" , "Bush" .)

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