The term 'pass off' can be defined as to deceive or PRETEND something is true. This term can be broken down into four crossword solutions: FAKE (4 letters), PRETEND (7 letters), FOIST (5 letters), and fob (3 letters). FAKE means to make something appear genuine when it is not, while PRETEND is to act as if something is true when it is not. FOIST is to pass off something as genuine without the other person's knowledge, and fob is to deceive someone by passing off something as genuine.