Some undesirable person? (5)
I believe the answer is:
leper
'some undesirable person?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe there's an association between them I don't understand?
'some undesirable person?' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'LEPER' is hidden in the letters of 'undesirable person'.
Can you help me to learn more?
(Other definitions for leper that I've seen before include "He's avoided" , "Person shunned socially" , "Someone shunned" , "Social reject" , "despised person" .)