It doesn't deserve full belief! (3)

I believe the answer is:

lie

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

'it doesn't deserve full' is the definition.
The definition suggests a singular noun which matches the answer.

'belief' is the wordplay.
'LIE' is hidden within the letters.
But, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for lie that I've seen before include "Tell porkies" , "Commit perjury" , "Mistruth" , "Fib in alienation" , "Perjure" .)

I've seen this clue in the Evening Standard.

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