sub·ro·gate /'sə-brō-ˌgāt/ vt -gat·ed, -gat·ing [Latin subrogatus, past participle of subrogare surrogare to elect as a substitute, from sub- under + rogare to request]: to put in the place of another by the doctrine of subrogation: substitute (as a second creditor) for another with regard to a legal right or claim
subrogate s the trustee to the priority and avoidance rights of certain unsecured creditors — J. J. White and R. S. Summers
the surety who pays the principal obligation is subrogated...to the rights of the creditor — Louisiana Civil Code
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.