Most attractive odds in clue challenge (6)
I believe the answer is:
cutest
'most attractive' is the definition.
('cute' can be similar in meaning to 'attractive')
'odds in clue challenge' is the wordplay.
'odds in clue' becomes 'cu' (I can't explain this - if you can you should believe this answer much more).
'challenge' becomes 'test' (I've seen this in another clue).
'cu'+'test'='CUTEST'
Can you help me to learn more?
(Other definitions for cutest that I've seen before include "Most appealing" , "Most clever" , "Most sweet and endearing" , "Most astute" , "Most quaint and attractive" .)