jinx /d͡ʒɪŋks/verb 4noun 2exclamation 1forms 3 verb4 •To bring bad luck to. •To cause something to happen by mentioning it. Often used sarcastically.“So you'll all be near New York!” Maggie says. “We don't know for sure yet.” Sara stresses. “Don't jinx it.” — 2008 •To cause a bad outcome through verbal expression of certainty about a good situation or result. See knocking on wood, which is supposed to mitigate this effect. •To cast a spell on. noun2 •A hex; an evil spell. •A person or thing supposed to bring bad luck. exclamation1 •Used after the same thing is said by two people simultaneously.Bart: I'm telling Mom and Dad! / Lisa: You're telling who? / Bart: Mom and Dad! / Girls: MOM AND DAD? JINX! / Janey Powell: Now you can't talk, 'til somebody says your name! — 1991 formsjinxed · jinxing · jinxes