false

/fɔls/
adjective
  1. Not true or correct; incorrect.
    • It is false to say that the Earth is flat.
    • The rumor turned out to be false.
    • She gave a false answer on the test.
  2. Not real or genuine; artificial or fake.
    • He wore a false beard as part of his costume.
    • She bought false eyelashes for the party.
    • The painting was discovered to be a false copy.
  3. Not sincere or honest; deceitful.
    • His false promises made everyone distrust him.
    • A false friend is worse than an open enemy.
    • She gave a false smile to hide her disappointment.
  4. Based on mistaken ideas or incorrect assumptions.
    • They had a false sense of security about the weather.
    • Her false hope kept her going for a while.
    • The alarm was triggered by a false signal.
adverb
  1. In a dishonest or deceptive manner (used in specific phrases like 'play false').
    • The witness testified false in court.
    • She felt that her partner had dealt false with her.
    • He played his friend false by revealing the secret.