Borrowed from Hebrew ליצנות (“clownery”).
leitzanus (uncountable)
- (Judaism) ridicule, disrespectful mockery.
2002, Moshe Young, Apples from the Tree: Transmitting Torah Values to Our Children:The uncorrected child who scorns, mocks and laughs at others is subconsciously being educated to become a perpetrator of leitzanus.
2006 July 3, mos...@mm.huji.ac.il, “SCJM Contest Shel Shavua: "OK, Rock, Gay Pishen!"”, in soc.culture.jewish.moderated[1] (Usenet):Your problem is that you did _not_ ask a question on limudei kodesh, you made bad jokes and leitzanut. Don't be surprised if your answered in kind.
