take somebody's name in vain

take (one's) name in vain

To speak about someone when they are not present, as in a critical manner. The phrase comes from one of the Ten Commandments, which prohibits taking God's name in vain. Hey, I heard that! Don't take my name in vain!
See also: name, take, vain
Farlex Dictionary of Idioms.

take somebody’s name in ˈvain

show a lack of respect when using somebody’s name: I get very upset when people take God’s name in vain. (humorous) Have you been taking my name in vain again?This expression comes from the Bible.
See also: name, take, vain
Farlex Partner Idioms Dictionary
See also:
  • take (one's) name in vain
  • take someone's name in vain
  • in God's name
  • in God's/Heaven's name
  • God’s acre
  • God's acre
  • God's own gift to (something)
  • a penny for them
  • God forfend
  • be twiddling (one's) thumbs