n.
  - a person or thing that is not what they are purported to be.
 - pretence.
 
adj.
 bogus; false.
v.
 (shams, shamming, shammed)
  - falsely present something as the truth.
 - pretend to be or to be experiencing.
 
 
  Derivative
  
  Etymology
  C17: perh. a north. Engl. dial. var. of shame.