Crossword Genius

Outfit, uniform or clothes showing precision (6)

Ross

I believe the answer is:

rigour

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'precision' is the definition.
The definition and answer can be both human attributes as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'outfit uniform or clothes' is the wordplay.
'outfit' becomes 'rig' (synonyms).
'uniform' becomes 'U' (phonetic alphabet: alpha, bravo, charlie etc.).
'clothes' is an insertion indicator (some letters clothe or cover others).
'u' put within 'or' is 'our'.
'rig'+'our'='RIGOUR'

'showing' is the link.

Can you help me to learn more?

(Other definitions for rigour that I've seen before include "Severity, harshness" , "Trial" , "Hardship" , "Austerity - strictness" , "Extreme strictness" .)

I've seen this clue in The Sunday Times and The Times.
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