Lord, if drunk, becomes flushed (6)
I believe the answer is:
florid
'flushed' is the definition.
(I've seen this before)
'lord if drunk' is the wordplay.
'drunk' is an anagram indicator.
'lord'+'if'='lordif'
'lordif' with letters rearranged gives 'FLORID'.
'becomes' acts as a link.
(Other definitions for florid that I've seen before include "Flushed with red" , "Red in the face" , "With flushed complexion" , "Using unusual words" , "Showy" .)