be (like) water off a duck's back

be (like) water off a duck's back

To be a fleeting presence; to not have a lasting impact on someone or something. I envy my sister because any criticism or judgment is like water off a duck's back to her.
See also: back, off, water
Farlex Dictionary of Idioms.

be (like) water off a ˌduck’s ˈback

(informal) used to say that something, especially criticism, has no effect on somebody: His book got bad reviews, but it was all water off a duck’s back — he doesn’t care at all what they say.
See also: back, off, water
Farlex Partner Idioms Dictionary
See also:
  • be water off a duck's back
  • envy (one) for (something)
  • envy for
  • write on water
  • like water off a duck's back
  • be the envy of (someone or something)
  • be the envy of somebody/something
  • a fleeting glance
  • fleeting
  • fleeting glance