Pride (7)
'pride' is the definition.
(hauteur can mean a superior or arrogant attitude)
This is all the clue.
(Other definitions for hauteur that I've seen before include "Disdainful pride or snobbery" , "Proud arrogance" , "Proud disdain" , "Arrogance - Hutu era (anag)" , "Lofty pride, looking down on others" .)
(Other definitions for gay that I've seen before include "Brightly coloured" , "John --, author of 'The Beggar's Opera'" , "Merry" , "Light-hearted, carefree" , "Homosexual" .)
(Other definitions for flag that I've seen before include "Languish, decline" , "appearing to decline" , "Become limp" , "Emblematic rectangular piece of fabric" , "sink" .)