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it takes one to know one

it takes one to know one

8.1
A reply saying the person who criticizes has the same fault
  • idiom
  • Offensive
translation icon : el que lo dice, lo es
  • You think I'm rude? Well, it takes one to know one!

Examples

  • When she called him lazy, he replied, 'it takes one to know one!'

  • Whenever someone accuses her of gossiping, she quickly replies, "it takes one to know one."

  • He laughed off the criticism by saying, "it takes one to know one, buddy."

  • If you call me stubborn, just remember, it takes one to know one.

  • If you call me stubborn, just remember, it takes one to know one.

  • He laughed off the criticism by saying, "it takes one to know one, buddy."

  • Whenever someone accuses her of gossiping, she quickly replies, "it takes one to know one."

Synonyms

the pot calling the kettle black
vsit takes one to know one
1 7.4

To say someone has a fault you also have

is a quick retort that tells the critic they share the fault
hi pot, meet kettle
vsit takes one to know one
  • Informal
9.9

A comment that points out a fault you also have

is a neutral retort usable beyond casual speech

Surface Forms

Morphology

it + take + one + to + know + one

The individual words are literal but the expression encodes a pragmatic inference — that only someone of a certain kind can recognize another of that kind — which is not a straightforward compositional meaning. A B1 learner who knows the words might be able to guess a related idea but would likely not predict the idiomatic retort/accusatory use without prior exposure, so it is partially but not fully transparent.

Etymology

It takes one to know one comes from the simple idea that you only notice a certain habit because you are one yourself, like a thief who can spot another thief by the same signs. So people use it as a quick reply to say someone 'has the same fault'.