under oath
Having sworn or affirmed in a legally binding way to tell the truth.
to lie under oath
Synonym: on oath
According to the letter, Bartl denied under oath that occurred. Source: Internet
"And based on what I've read in their filings, when Trump campaign lawyers have stood before courts under oath, they have repeatedly refused to actually allege grand fraud — because there are legal consequences for lying to judges. Source: Internet
An affidavit is a type of verified statement or showing, or in other words, it contains a verification, meaning it is under oath or penalty of perjury, and this serves as evidence to its veracity and is required for court proceedings. Source: Internet
At least four long-time acquaintances testified under oath that the accident had dramatically changed Muybridge's personality, from genial and pleasant to unstable and erratic. Source: Internet
But Romney did not find Trump guilty of the second charge of obstruction of Congress for his refusal to turn over documents to the U.S. House of Representatives and restrict top officials within his administration from testifying under oath. Source: Internet
For years you went on TV spreading the Russian propaganda – knowing the entire time that not one single person under oath from your committee saw any collusion. Source: Internet