立(た)て替(か)えるto pay for someone else (with the expectation of being reimbursed later), to lend someone the money to pay for (e.g. rent), to make a temporary payment on someone's behalf

Common

1. る-verb, Transitive verb

   1. 1.

      to pay for someone else (with the expectation of being reimbursed later), to lend someone the money to pay for (e.g. rent), to make a temporary payment on someone's behalf