A shore can be pretty rough (6)

I believe the answer is:

hoarse

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'pretty rough' is the definition.
'hoarse' can be an answer for 'rough' (I've seen this in another clue). I am not certain of the 'pretty' bit.

'a shore can be' is the wordplay.
'can be' is an anagram indicator.
'a'+'shore'='ashore'
'ashore' with letters rearranged gives 'HOARSE'.

Can you help me to learn more?

(Other definitions for hoarse that I've seen before include "Ashore (anag)" , "Gravelly" , "With a rough husky voiced" , "Croaky" , "Of voice, sounding rough" .)

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