like water off a duck's back
Readily and without apparent effect. For example, The scathing reviews rolled off him like water off a duck's back. This expression alludes to the fact that duck feathers shed water. [Early 1800s]
Words nearby like water off a duck's back
like rolling off a log,
like shooting fish in a barrel,
like something the cat dragged in,
like that,
like to,
like water off a duck's back,
like-minded,
likelihood,
likely,
likely as not,
liken