Bluff (1)

Bluff-v
1-(vti) to pretend to have strength, confidence, or the intention of doing something, in order to deceive somebody
2-(vti) to try to deceive other players in a card game about the true value of your hand
3-(vt) Malaysia, Singapore to try to mislead somebody about something relatively unimportant (informal)

n
1-a pretense of strengh, confidence, or of the intention of doing something
2-somebody who pretends to be strogner or more confident than he or she really is

Synonyms
trick
con
fake it
lie
pretend
deceive
pass off