answer for

verb3

1. •
   To be held responsible for; to take the blame for something.

   • The mayor will be answering for his crimes for many years.
2. •
   To guarantee.

   • I will answer for his debt, if he can't pay on the day.
3. •
   To vouch for (someone); to attest to the character of (someone).

   • She's known me for years, and she's always answered for me!