untrue

Adjective

• (used especially of persons) not dependable in devotion or affection; unfaithful
  • a false friend
    
  • when lovers prove untrue
    

• not accurately fitted; not level
  • the frame was out of true
    
  • off-level floors and untrue doors and windows
    

• not true to an obligation or trust
  • is untrue to his highest opportunity and duty-Bruno Laske
    

• not according with the facts
  • unfortunately the statement was simply untrue
    

Related words

• Synonyms: 
  false , out of true