Crossword Genius

Showing impertinence precludes fist flying (13)

Ross

I believe the answer is:

disrespectful

'showing impertinence' is the definition.

'precludes fist flying' is the wordplay.
'flying' indicates anagramming the letters.
'precludes'+'fist'='precludesfist'
'precludesfist' is an anagram of 'DISRESPECTFUL'.

(Other definitions for disrespectful that I've seen before include "Impolite" , "Uncivil" , "Rude" , "Impudent" , "Insulting" .)

I've seen this clue in The Times.
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