forgettablefor‧get‧ta‧ble /fəˈɡetəbəl $ fər-/ adjective 
 
- a completely forgettable movie
 
- But being forgettable was part of her job; a jigsaw piece that fitted invisibly into any puzzle.
 - But that was 1995, a lamentable and hopefully forgettable year for him.
 - He'd played in some eminently forgettable horror movies and I felt I could not seriously consider him.
 - He was of medium height, and had regular, even features of the kind which are instantly forgettable.
 - However, that morning Agnes intended to be neither forgettable nor invisible.
 
  adjectiveforgetfulforgettable ≠ unforgettableadverbforgetfullyunforgettablynounforgetfulnessverbforget