Character who accepts an absurd lie (6)

I believe the answer is:

canard

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'lie' is the definition.
(thesaurus)

'character who accepts an absurd' is the wordplay.
'character who' becomes 'card' (I can't justify this - if you can you should believe this answer much more).
'accepts' is an insertion indicator.
'absurd' indicates an anagram.
'an' anagrammed gives 'na'.
'card' going around 'na' is 'CANARD'.

Can you help me to learn more?

(Other definitions for canard that I've seen before include "False rumour or story, from France" , "Baseless rumour" , "'False report, hoax (6)'" , "A false rumour from France? (6)" , "Untrue story" .)

I've seen this clue in The Irish Times.

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