Crossword Genius

Angry exclamation used by sailor folk (9)

Ross

I believe the answer is:

tarnation

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'angry exclamation' is the definition.
The definition suggests a singular noun which matches the answer.

'by sailor folk' is the wordplay.
'by' is a charade indicator (letters next to each other).
'sailor' becomes 'tar' (slang term for a sailor).
'folk' becomes 'nation' (I am not sure about this - if you are sure you should believe this answer much more).
'tar'+'nation' is 'TARNATION'.

'used' is the link.

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I've seen this clue in the Evening Standard.
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