- swearS2 [sweə US swer] v past tense swore [swo: US swo:r] past participle sworn [swo:n US swo:rn]▬▬▬▬▬▬▬1¦(offensive language)¦2¦(promise)¦3¦(state the truth)¦4 somebody could have sworn (that) ...5¦(public promise)¦6 swear somebody to secrecy/silencePhrasal verbsswear by somethingswear somebody<=>in▬▬▬▬▬▬▬[: Old English; Origin: swerian]1.) ¦(OFFENSIVE LANGUAGE)¦to use rude and offensive language▪ Don't swear in front of the children.swear at▪ He turned round and swore at me.2.) ¦(PROMISE)¦ [T]to promise that you will do somethingswear (that)▪ Victor swore he would get his revenge.swear to do sth▪ Mona swore never to return home.▪ Do you swear on your honour (=promise very strongly) that you will never tell anyone?3.) ¦(STATE THE TRUTH)¦ [I and T] [i]informalto say very strongly that what you are saying is true▪ I never touched your purse, I swear!swear (that)▪ He says he was there all the time, but I swear I never saw him.swear blindBrE (=say very strongly)▪ She swore blind that she had never seen him before.▪ I never touched her, I swear to God .▪ I think it was about ten o'clock when we left, but I couldn't swear to it (=I am not certain) .4.) sb could have sworn (that) ...used to say that someone was sure about something but now they think they were wrong▪ I could have sworn I had my keys.5.) ¦(PUBLIC PROMISE)¦ [I and T]to make a public official promise, especially in a court of lawswear on▪ Witnesses have to swear on the Bible.▪ Remember that you have sworn an oath and so must tell the truth▪ Presidents must swear allegiance to the US constitution.6.) swear sb to secrecy/silenceto make someone promise not to tell anyone what you have told them>swearing n [U]▪ He was cautioned for swearing.▪ lots of shouting and swearingswear by [swear by sth] phr vto have great confidence in how good or effective something is▪ He swears by vitamin C pills.swear in [swear sb<=>in] phr vif someone with a new public job or position is sworn in, they make an official promise to do their duty well▪ The new governor will be sworn in next week.▪ The jury have not yet been sworn in.
Dictionary of contemporary English. 2013.