untrue in WordNet English dictionary

1. (used especially of persons) not dependable in devotion or affection; unfaithful
   "a false friend"; "when lovers prove untrue"
   false  untrue 
   
2. not accurately fitted; not level
   "the frame was out of true"; "off-level floors and untrue doors and windows"
   out of true  untrue 
   
3. not according with the facts
   "unfortunately the statement was simply untrue"
   untrue 
   
4. not true to an obligation or trust
   "is untrue to his highest opportunity and duty"-Bruno Laske
   untrue