Crossword Genius

Showing bitterness, managed business right round America (9)

Ross

I believe the answer is:

rancorous

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'showing bitterness' is the definition.
(with bitterness or rancour)

'managed business right round america' is the wordplay.
'managed business right' becomes 'rancor' (I can't justify this - if you can you should give a lot more credence to this answer).
'round' becomes 'o' (round can mean a round object).
'america' becomes 'US' (United States).
'rancor'+'o'+'us'='RANCOROUS'

Can you help me to learn more?

(Other definitions for rancorous that I've seen before include "spiteful?" , "Showing bitter resentment" , "Acrimonious" , "Resentful, bitter" .)

I've seen this clue in The Times.
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