Roughly what's said by drunk trendy (4)
I believe the answer is:
chic
'trendy' is the definition.
(I've seen this in another clue)
'roughly what's said by drunk' is the wordplay.
'roughly' becomes 'c' (circa).
'what's said by drunk' becomes 'hic' (I can't explain this - if you can you should give a lot more credence to this answer).
'c'+'hic'='CHIC'
Can you help me to learn more?
(Other definitions for chic that I've seen before include "Unwanted sounds" , "Snazzy" , "Well turned out" , "Elegant and stylishly fashionable" , "Stylishness, elegance" .)