Arrogant, haughty (5-5)
I believe the answer is:
hoity-toity
This clue is a double definition.
'arrogant' is the first definition.
(I've seen this before)
'haughty' is the second definition.
(thesaurus)
(Other definitions for hoity-toity that I've seen before include "Haughty" , "Stuck up" , "Affectedly genteel" , "Stuck-up, snobbish" .)