Crossword Genius

Plaintiff upset about copper's hesitation (7)

Ross

I believe the answer is:

accuser

'plaintiff' is the definition.
(thesaurus)

'upset about copper's hesitation' is the wordplay.
'upset' says the letters should be written in reverse.
'about' becomes 'ca' (abbreviation for 'circa'**).
'copper's' becomes 'cus' (chemical symbol).
'hesitation' becomes 'er'.
'ca' backwards is 'ac'.
'ac'+'cus'+'er'='ACCUSER'

(Other definitions for accuser that I've seen before include "origin of charge?" , "who tries to blame someone else" , "I may charge" , "One bringing charges" , "One who blames" .)

I've seen this clue in The Telegraph.
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