反故にする

Meaning

1. expvs-i
   to throw away as useless; to scrap
2. expvs-i
   to make null and void; to renege; to annul; to revoke

Example sentences

• 一族が苦労して積み上げてきたものを、お前は一瞬で反故にするつもりか。

  Do you intend to throw away in one instant what our family has painstakingly built up?