Crossword Genius

A barrier, worker being stubborn (7)

Ross

I believe the answer is:

adamant

'stubborn' is the definition.
(thesaurus)

'a barrier worker' is the wordplay.
'barrier' becomes 'dam' (dam is a kind of barrier).
'worker' becomes 'ant' (worker is a type of ant).
'a'+'dam'+'ant'='ADAMANT'

'being' is the link.

(Other definitions for adamant that I've seen before include "Fabulous rock" , "Data man can be quite unyielding" , "Determined and unyielding to requests" , "Firm and unyielding" , "Refusing to be persuaded" .)

I've seen this clue in The Telegraph.
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