Amateur discouraged surrender? (3,4)

I believe the answer is:

lay down

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'surrender?' is the definition.
(thesaurus)

'amateur discouraged' is the wordplay.
'amateur' becomes 'lay' (similar in meaning).
'discouraged' becomes 'down' (I can't justify this - if you can you should believe this answer much more).
'lay'+'down'='LAY DOWN'

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(Other definitions for lay down that I've seen before include "Enact or establish" , "Insist upon - abandon" , "Record" .)

I've seen this clue in the Sydney Morning Herald.

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