Hot drink princess sent back could be thus (7)
I believe the answer is:
insipid
'could be thus' is the definition.
I can't judge whether this defines the answer.
'hot drink princess sent back' is the wordplay.
'hot' becomes 'in' (both can mean fashionable).
'drink' becomes 'sip' (sipping is a kind of drinking).
'princess' becomes 'di' (Princess Diana).
'sent back' says the letters should be written in reverse.
'di' reversed gives 'id'.
'in'+'sip'+'id'='INSIPID'
Can you help me to learn more?
(Other definitions for insipid that I've seen before include "flat" , "Jejune" , "Lacking 10" , "Colourless" , "without taste" .)