tear something ↔ up phrasal verb ( see also ↑ tear )
1 . to tear a piece of paper or cloth into small pieces SYN rip up :
She tore up his letter and threw it away.
2 . to remove something from the ground by pulling or pushing it violently:
the remains of trees that had been torn up by the storm
3 . tear up an agreement/a contract etc to say that you no longer accept an agreement or contract:
threats to tear up the peace agreement