Random person one doesn’t want to marry? (10)
I believe the answer is:
unintended
'random' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'person one doesn't want to marry?' is the wordplay.
I cannot really see how this works, but
'person' could be 'end' (end is a kind of person) and 'end' is located in the answer.
'one' could be 'un' (northern English dialect form of 'one') and 'un' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for unintended that I've seen before include "Not deliberate" , "Not meant" , "Not planned" , "by mistake" .)