Crossword Genius

Super obvious spat (9)

Ross

I believe the answer is:

plaintiff

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'super' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I don't see?

'obvious spat' is the wordplay.
'obvious' becomes 'plain' (similar in meaning).
'spat' becomes 'tiff' (synonyms).
'plain'+'tiff'='PLAINTIFF'

Can you help me to learn more?

(Other definitions for plaintiff that I've seen before include "One bringing legal case" , "Bringer of lawsuit" , "Temporary disappearances of a heavenly body" , "Former litigant" , "Person bringing a civil action in a court of law" .)

I've seen this clue in the Sydney Morning Herald.
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