Sorry tenant gets confused by representative (9)
I believe the answer is:
repentant
'sorry' is the definition.
(similar in meaning)
'tenant gets confused by representative' is the wordplay.
'gets confused' is an anagram indicator.
'by' is a charade indicator (letters next to each other).
'representative' becomes 'rep' (rep is a kind of representative).
'tenant' anagrammed gives 'entant'.
'entant' after 'rep' is 'REPENTANT'.
(Other definitions for repentant that I've seen before include "Contrite" , "showing contrition" , "sorry state" , "Feeling remorse for misdeeds" , "Regretful" .)