false

Adjective

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

• adopted in order to deceive
  • an assumed name
    
  • an assumed cheerfulness
    
  • a fictitious address
    
  • fictive sympathy
    
  • a pretended interest
    
  • a put-on childish voice
    
  • sham modesty
    

• inaccurate in pitch
  • a false (or sour) note
    
  • her singing was off key
    

• designed to deceive
  • a suitcase with a false bottom
    

• not genuine or real; being an imitation of the genuine article; it's real synthetic fur"
  • it isn't fake anything
    
  • faux pearls
    
  • false teeth
    
  • decorated with imitation palm leaves
    
  • a purse of simulated alligator hide
    

• inappropriate to reality or facts
  • delusive faith in a wonder drug
    
  • delusive expectations
    
  • false hopes
    

• deliberately deceptive
  • false pretenses
    

• erroneous and usually accidental
  • a false start
    
  • a false alarm
    

• arising from error
  • a false assumption
    
  • a mistaken view of the situation
    

• not in accordance with the fact or reality or actuality
  • gave false testimony under oath
    
  • false tales of bravery
    

Adverb

• in a disloyal and faithless manner
  • he behaved treacherously
    
  • his wife played him false
    

Related words

• Synonyms: 
  untrue , assumed , fictitious , fictive , pretended , put on , sham , off-key , sour , fake , faux , imitation , simulated , delusive , mistaken , faithlessly , traitorously , treacherously , treasonably