falsification in WordNet English dictionary

1. the act of determining that something is false
   falsification  falsifying  disproof  refutation  refutal 
   
2. any evidence that helps to establish the falsity of something
   disproof  falsification  refutation 
   
3. the act of rendering something false as by fraudulent changes (of documents or measures etc.) or counterfeiting
   falsification  falsehood 
   
4. a willful perversion of facts
   falsification  misrepresentation