Crossword Genius

Arrogant poster might be this (5-2)

Ross

I believe the answer is:

stuck-up

I believe this is a double definition.

'arrogant' is the first definition.
(thesaurus)

'poster might be this' is the second definition.
(eg a poster might be stuck on a wall)

(Other definitions for stuck-up that I've seen before include "Snooty" , "Hoity-toity" , "Snobbish, proud" , "Overly conceited or arrogant" , "Toffee-nosed" .)

I've seen this clue in The Telegraph.
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