perjury

Perjury is the act of deliberately lying under oath. A defendant in a murder trial commits perjury when he swears he never met the murder victim before, even though he had a two-year relationship with her.

Although the word perjury contains jury, members of the jury aren't likely to commit perjury, because they're not under oath and haven't sworn to be truthful. A witness in a trial can commit perjury by willfully lying about facts related to the case. Perjury isn't just a little white lie. It's a crime that can land the person who commits it in jail.

Definitions of perjury
1

n criminal offense of making false statements under oath

Synonyms:
bearing false witness, lying under oath
Type of:
infraction, infringement, misdemeanor, misdemeanour, violation
a crime less serious than a felony

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.