Words of moralist, silly. What else can I say? (1,2,4,3,5)

I believe the answer is:

i am lost for words

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'else can i say?' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'words of moralist silly' is the wordplay.
'silly' indicates anagramming the letters.
'words'+'of'+'moralist'='wordsofmoralist'
'wordsofmoralist' anagrammed gives 'I AM LOST FOR WORDS'.

'what' acts as a link.

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

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