subrogation

UK: /ˌsʌbrəˈɡeɪʃən/

Collins Concise English Dictionary © HarperCollins Publishers::

subrogation / ˌsʌbrəˈɡeɪʃən/ noun

1. the substitution of one person or thing for another, esp the placing of a surety who has paid the debt in the place of the creditor, entitling him or her to payment from the original debtor

WordReference Random House Unabridged Dictionary of American English © 2025

sub•ro•gate  (sub′rə gāt′), v.t., -gat•ed, -gat•ing. 

1. to put into the place of another;
   substitute for another.
2. Law [Civil Law.] to substitute (one person) for another with reference to a claim or right.

• Latin subrogātus (past participle of subrogāre to nominate (someone) as a substitute), equivalent. to sub- sub- + rogā(re) to request + -tus past participle suffix
• 1400–50; 1540–50 for def. 1; late Middle English (past participle)

sub′ro•ga′tion, n.