Gone astray, alas, at a great place for bawdiness (8)

I believe the answer is:

salacity

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'for bawdiness' is the definition.
(synonyms)

'gone astray alas at a great' is the wordplay.
'gone astray' indicates anagramming the letters.
'at' is a charade indicator (letters next to each other).
'a great' becomes 'city' (I can't justify this - if you can you should give a lot more credence to this answer).
'alas' with letters rearranged gives 'sala'.
'sala'+'city'='SALACITY'

'place' acts as a link.

Can you help me to learn more?

(Another definition for salacity that I've seen is " Lewdness or eroticism".)

I've seen this clue in the Evening Standard.

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