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to know what is what

to know what is what

1 6.4
To understand what is really happening because of experience
  • idiom
  • Informal
translation icon : saber lo que es lo que
  • After years of experience, she finally knows what is what in the industry.

Honestly, I don't even know what is what, but it smells, Herbie.

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Examples

  • Honestly, I don't even know what is what, but it smells, Herbie.

  • I know what is what.

    Fiction book (1998)
  • I saw people struggling to get by, not knowing what was what and what was next.

  • And you don't know what is what.

  • Now I don't even know what is what, and that's exactly where I want to be.

  • Most sensible people in town knew what was what, though, particularly when the newspaper reported that a body, beaten and bloated past recognition, had washed ashore at Belle Isle Lake.

    Fiction book (1990)
  • He has seen enough to know what is what when it comes to making decisions.

  • With all the signs around, it's easy to know what is what in this situation.

Synonyms

to understand
vsto know what is what
1.0

To know the meaning of something

narrows this to understanding true facts through experience or knowledge
to know what's going on
vsto know what is what
294 3.1

To be aware of what is happening

emphasizes deeper, important facts rather than only current events
to learn the truth
vsto know what is what
31 3.0

To find out what really happened

means already having understood those true facts through experience
to know what's what
vsto know what is what
  • Informal
15 6.7

To understand a situation or subject well

has identical meaning but appears as a different phrase
to know the score
vsto know what is what
  • Informal
11 4.9

Understand what really happens in a situation, often when it is bad

is broader, covering important facts learned from experience
to know which end is up
vsto know what is what
  • Informal
1 7.8

To understand how things work in a place or job

focuses more on knowing the true overall situation than procedures

Antonyms

692 1.3

Not able to think clearly or understand what is happening

How Aware

to know what is what
  • Informal
1 6.4
to understand
1.0

Surface Forms

know what is what infinitive
knowing what is what present participle
knows what is what third person singular
known what is what past participle

Morphology

know + what + be + what

The phrase is transparently built from 'know' plus the clause 'what is what' (i.e. which things are which / what is going on), so a learner who understands the constituent words can infer 'understand the true situation.' The pattern is compositional and parallels constructions in other languages, making it readily comprehensible to a B1 learner.

Etymology

The phrase know what is what comes from the simple picture of someone pointing and saying what is what — which thing is which. So, to know what is what means 'to understand the true situation' and to see the important facts.