Game to get embarrassed about, with more offensive language? (5)
I believe the answer is:
ruder
'with more offensive language?' is the definition.
(rude can mean using offensive language)
'game to get embarrassed about' is the wordplay.
'game' becomes 'RU' (rugby union).
'to get' says to put letters next to each other.
'embarrassed' becomes 'red' (someone may blush or go red when embarrassed).
'about' is a reversal indicator.
'red' in reverse letter order is 'der'.
'ru'+'der'='RUDER'
(Other definitions for ruder that I've seen before include "With less warning, perhaps" , "more robust" , "less pleasant in manner" , "Less polite" , "Coarser" .)