Liar's outfit is shoddy - typical of one making advances? (11)

I believe the answer is:

flirtatious

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

'shoddy typical of one making advances?' is the definition.
I can't tell whether this definition defines the answer.

'liar's outfit' is the wordplay.
'liar's outfit' can be anagrammed to 'FLIRTATIOUS'.
But, I am not clear how this is indicated.

'is' acts as a link.

Can you help me to learn more?

(Other definitions for flirtatious that I've seen before include "Given to amorous banter" , "Coquettish" , "Openly displaying attraction" .)

I've seen this clue in The Independent.

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