verb (v)

• declare invalid

  menyatakan tidak sah

  Example:
  The contract was annulled.
  

  Synonym:
  avoid, invalidate, nullify, quash, void
  Antonym:
  formalise, formalize, validate
  

  source: wordnet30
• cancel officially

  batalkan resmi

  Synonym:
  countermand, lift, overturn, repeal, rescind, reverse, revoke, vacate
  

  source: wordnet30
• To reduce to nothing; to obliterate.

  untuk mengurangkan kosong; untuk menghapuskan.

  source: webster1913