Record one in room at home, a politician being prejudiced (14)
I believe the answer is:
discriminatory
'being prejudiced' is the definition.
(synonyms)
'record one in room at home a politician' is the wordplay.
'record' becomes 'disc' (eg a CD, compact disc).
'one in room' becomes 'rim' (I am not sure about this - if you are sure you should believe this answer much more).
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'politician' becomes 'tory' (term for a Conservative Party politician).
'disc'+'rim'+'in'+'a'+'tory'='DISCRIMINATORY'
Can you help me to learn more?
(Other definitions for discriminatory that I've seen before include "showing bias" , "Showing prejudice" , "Biased" , "Partial" .)