Huge sot, when out of head, gets sexist? (5)
I believe the answer is:
bigot
'sexist?' is the definition.
(sexist is a kind of bigot)
'huge sot when out of head' is the wordplay.
'huge' becomes 'big' (similar in meaning).
'when out of head' means to remove the first letter.
'sot' with its first letter taken off is 'ot'.
'big'+'ot'='BIGOT'
'gets' acts as a link.
(Other definitions for bigot that I've seen before include "Racist or sexist?" , "Dogmatist" , "Intolerant type" , "Someone intolerant of opinions of others" , "Deeply prejudiced and intolerant person" .)