Person who's invited may be judged in hearing (5)
I believe the answer is:
guest
'person who's invited' is the definition.
'judged in hearing' is the wordplay.
'judged' becomes 'guessed' ('guess' can be a synonym of 'judge').
'in hearing' indicates a 'sounds like' (homophone) clue.
'guessed' sounds like 'GUEST'.
'may be' acts as a link.
(Other definitions for guest that I've seen before include "Caller" , "Invited visitor" , "See 2" , "Invited person" , "One receiving hospitality" .)