Nasty sailor given lease on exposed coastal area (9)

I believe the answer is:

abhorrent

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'nasty' is the definition.
(thesaurus)

'sailor given lease on exposed coastal area' is the wordplay.
'sailor given' becomes 'ab' (I am not sure about this - if you are sure you should believe this answer much more).
'lease' becomes 'rent' (synonyms).
'on' is a charade indicator (letters next to each other).
'exposed' says to take the centre (outside letters removed).
'coastal area' becomes 'shore' (I've seen this in another clue).
The middle letters of 'shore' are 'hor'.
'rent' after 'hor' is 'horrent'.
'ab'+'horrent'='ABHORRENT'

Can you help me to learn more?

(Other definitions for abhorrent that I've seen before include "Detestable, loathsome" , "Rob in Tehran - that's disgusting" , "Detestable, really off-putting" , "Hated" , "Earthborn (anag) - detestable" .)

I've seen this clue in The Independent.

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