reckon with

verb3

1. •
   To settle accounts or claims with.

   • After a long time, the lord of those seruants commeth, and reckoneth with them. — 1611
2. •
   To deal with.

   • We'll reckon with him after the deed is done.
   • If she lets you down, she'll have me to reckon with
3. •
   To take into account.

   • I didn't reckon with his stubbornness.