English Dictionary

water off a duck's back

noun

Something potentially harmful or hurtful, such as criticism or insult, that nevertheless has no effect or impact on the target.

Criticism is like water off a duck's back.

意味（1）

Something potentially harmful or hurtful, such as criticism or insult, that nevertheless has no effect or impact on the target.

She's always going on at him about something, but to him it's all water off a duck's back.