Juliet swung round topless, getting derided (6)
I believe the answer is:
jeered
'derided' is the definition.
(jeer can mean to deride or mock)
'juliet swung round topless getting' is the wordplay.
'juliet' becomes 'J' (phonetic alphabet: alpha, bravo, charlie etc.).
'swung round' becomes 'veered'.
'topless' means to remove the first letter.
'getting' is a charade indicator (letters next to each other).
'veered' with its initial letter removed is 'eered'.
'j'+'eered'='JEERED'
(Other definitions for jeered that I've seen before include "Mocked, derided" , "Barracked" , "Laughed with derision" , "Ridiculed, sneered" , "Did deride" .)