Throw up your head, haughty (5)
I believe the answer is:
lofty
'haughty' is the definition.
(I've seen this before)
'throw up your head' is the wordplay.
'throw up' becomes 'loft' (I've seen this in another clue).
'head' indicates taking the first letters.
The first letter of 'your' is 'y'.
'loft'+'y'='LOFTY'
(Other definitions for lofty that I've seen before include "Haughty" , "Of imposing height" , "Tall, arrogant" , "Of majestic height" , "Exalted" .)