Different rationale for one who cedes ownership rights (9)

I believe the answer is:

alienator

I'm a little stuck... Click here to teach me more about this clue!

'one who cedes ownership rights' is the definition.
The definition suggests a singular noun which matches the answer.

'different rationale' is the wordplay.
'different' indicates an anagram.
'rationale' with letters rearranged gives 'ALIENATOR'.

'for' is the link.

Can you help me to learn more?

(Other definitions for alienator that I've seen before include "one who repels" , "Causer of estrangement" , "Off-putting type" .)

I've seen this clue in The Hindu.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.