Drunk, real smashed to be precise (7)
I believe the answer is:
literal
'precise' is the definition.
(I've seen this before)
'drunk real smashed' is the wordplay.
'drunk' becomes 'lit' (I've seen this in another clue).
'smashed' indicates anagramming the letters.
'real' is an anagram of 'eral'.
'lit'+'eral'='LITERAL'
'to be' acts as a link.
(Other definitions for literal that I've seen before include "character fault?" , "primary sense" , "Unimaginative" , "Textual error" , "without distortion" .)