swear

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Related to swear blind: swear up and down

swear

v. 1) to declare under oath that one will tell the truth (sometimes "the truth, the whole truth and nothing but the truth"). Failure to tell the truth, and do so knowingly, is the crime of perjury. 2) to administer an oath to a witness that he/she will tell the truth, which is done by a notary public, a court clerk, a court reporter, or anyone authorized by law to administer oaths. 3) to install into office by administering an oath. 4) to use profanity. (See: oath, perjury, notary public)

swear

verb adjure, affirm, allege under oath, assert as true, assure, authenticate, aver, avow, bear witness, bind oneself by oath, certify, confirm, declare, declare solemnly, declare true, give a promise, give evidence, give one's word, guarantee, iurare, iureiurando adfirmare, maintain under oath, promise, put one's trust in, state, state under oath, utter an oath, vouch, vow
Associated concepts: false swearing, public swearing
Foreign phrases: In judicio non creditur nisi juratis.In a court of justice no one is given credence who is not sworn.
See also: acknowledge, adduce, assure, attest, avouch, avow, bear, certify, declare, depose, evidence, plead, promise, testify, vow, witness

swear

to take an oath.

TO SWEAR. To take an oath, judicially administered. Vide Affirmation; Oath.
     2. To swear also signifies to use such profane language as is forbidden by law. This is generally punished by statutory provisions in the several states.

References in periodicals archive ?
The only thing you can commend them on is their acting when they swear blind they're on the straight and narrow, even though their questionable antics have been caught on film.
We make you believe the unbelievable and swear blind the impossible has just happened.
Some people will swear blind that they don't smoke when you can smell the smoke on their breath.
They are not malicious but if you ask him if he has done something naughty he will swear blind it wasn't him.
Then why does one child swear blind they don't want to go to the toilet when you're standing right next to one, only to then decide to change their mind 20 minutes later when you're halfway round the queue for the next ride?
Although I couldn't swear blind to this, I'd rather think that registering it as a trademark might well have slipped his mind, seeing he had wars to attend to and a few scores to settle with those pesky Welsh across the border.
Yes, January is that very special month when every promise you make is normally broken by mid-February, especially the health and fitness resolutions we swear blind we'll keep.