adjective: not true; contrary to fact or reality
The statement that the Earth is flat is demonstrably false.
adjective: incorrect or mistaken
Her answer was false because she misread the question.
adjective: deliberately deceptive; dishonest
He gave a false name to the police.
adjective: not genuine; counterfeit or imitation
The officer confiscated several false passports.
adjective: artificial, used as a substitute for a natural part
She wore false eyelashes on stage.
adjective: disloyal or faithless
A false friend will abandon you in times of trouble.