What is your definition of a false prophet? Everyone is free to answer this question.?

a false prophet teaches false doctrine, has taken the ministry of christ upon himself without receiving a divine calling with the ministration of Angels to guide him. Joseph Smith is not a false Prophet.What is your definition of a false prophet? Everyone is free to answer this question.?
the one who call people to combine another thing beside God in worship, or the one who call others to worship him beside God, and the one who continuously lies.What is your definition of a false prophet? Everyone is free to answer this question.?
Deu 13:1 露 If there arise among you a prophet, or a dreamer of dreams, and giveth thee a sign or a wonder,





Deu 13:2 And the sign or the wonder come to pass, whereof he spake unto thee, saying, Let us go after other gods, which thou hast not known, and let us serve them;





Deu 13:3 Thou shalt not hearken unto the words of that prophet, or that dreamer of dreams: for the LORD your God proveth you, to know whether ye love the LORD your God with all your heart and with all your soul.





Deu 13:4 Ye shall walk after the LORD your God, and fear him, and keep his commandments, and obey his voice, and ye shall serve him, and cleave unto him.





Deu 13:5 And that prophet, or that dreamer of dreams, shall be put to death; because he hath spoken to turn [you] away from the LORD your God, which brought you out of the land of Egypt, and redeemed you out of the house of bondage, to thrust thee out of the way which the LORD thy God commanded thee to walk in. So shalt thou put the evil away from the midst of thee.





Generally a false prophet is someone who claims to be speaking something from God that contradicts what God has already said or who makes prophecies that don't happen when they're predicted to. Joseph Smith does fall into this category, for the record, for both reasons.
just read


Matthew 7:15-20


that should answer your question