WordRel.com

• falsify knowingly

  antonym	correct
  derivation	falsificationfalsifierfalsityfalsity
  other	falsificationfalsifierfalsityfalsity
  hypernym	change by reversalreverseturn

• insert words into texts, often falsifying it thereby

  synonym	alterinterpolate
  derivation	falsificationfalsifier
  other	falsificationfalsifier
  hypernym	editredact

• prove false

  derivation	falsificationfalsifyingfalsity
  other	falsificationfalsifyingfalsity
  hypernym	confutedisprove

• make false by mutilation or addition; as of a message or story

  synonym	distortgarblewarp
  derivation	falsificationfalsifierfalsityfalsity
  other	falsificationfalsifierfalsityfalsity
  hypernym	beliemisrepresent
  hyponym	manglemurdermutilate

• tamper, with the purpose of deception

  synonym	cookfakefudgemanipulatemisrepresentwangle
  derivation	falsificationfalsificationfalsifierfalsity
  other	falsificationfalsificationfalsifierfalsity
  hypernym	cheatchisel
  hyponym	juggle