Deprived -- due to faulty beer measure! (6)
I believe the answer is:
bereft
'deprived' is the definition.
(thesaurus)
'faulty beer measure' is the wordplay.
'faulty' is an anagram indicator.
'measure' becomes 'ft' (ft is a kind of measure**).
'beer' with letters rearranged gives 'bere'.
'bere'+'ft'='BEREFT'
'due to' is the link.
(Other definitions for bereft that I've seen before include "Sorrowful through loss" , "Sad through loss or deprivation" , "Cut off - deprived" , "Having a deep sense of loss" , "Deprived of, perhaps by death" .)