Scottish football club being mostly obdurate (10)

I believe the answer is:

livingston

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'scottish football club' is the definition.
The definition suggests a singular noun which matches the answer.

'being mostly obdurate' is the wordplay.
'being' becomes 'living' (I can't justify this - if you can you should believe this answer much more).
'mostly' means to remove the last letter (most but not all of the word).
'obdurate' becomes 'stony' (synonyms).
'stony' with its last letter taken off is 'ston'.
'living'+'ston'='LIVINGSTON'

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(Other definitions for livingston that I've seen before include "new town" , "Scottish team" .)

I've seen this clue in The Telegraph.

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