Queen Elizabeth right or wrong (5)
I believe the answer is:
error
'wrong?' is the definition.
(thesaurus)
'queen elizabeth right or' is the wordplay.
'queen elizabeth' becomes 'er' (abbreviation for Elizabeth Regina).
'right' becomes 'r' (common abbreviation).
'er'+'r'+'or'='ERROR'
(Other definitions for error that I've seen before include "Miscarriage of justice" , "Solecism" , "Blunder, slip" , "Slip, mistake" , "wrongdoing" .)