Meaning of “false” - Learner’s Dictionary

false

adjective uk us /fɔːls/
NOT TRUE

B1 not true or correct:

a false name
Many rumours about her life were later proved to be false.
NOT REAL

B2 not real, but made to look or seem real:

false teeth
false documents
NOT SINCERE

not sincere or expressing real emotions:

false promises
I hate the way he smiles at everyone. It's so false.
falsely adverb

(Definition of “false” from the Cambridge Learner’s Dictionary © Cambridge University Press)