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inside and out

inside and out

33 3.5
Completely and in every detail
  • idiom
  • Informal
translation icon : a fondo
  • All their homes are equally unique and interesting, inside and out.
  • know inside and out

I said you're a beautiful woman inside and out.

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Examples

  • She knows the history of the town inside and out, having lived there her entire life.

  • Look, we know the place inside and out.

  • I know this bank inside and out.

  • Someone who knows this business inside and out.

  • You know me inside and out.

  • It's because you're beautiful, inside and out.

  • He knows these woods inside and out.

  • By the time you've repainted the whole place inside and out, it's time to start over again.

    Fiction book (1993)
  • Before the exam, he studied the material inside and out to ensure he was well-prepared.

  • The engineer understands the machine inside and out, which helps her troubleshoot issues quickly.

Synonyms

completely
vsinside and out
1.0

Totally, in every way

focuses on detailed thoroughness rather than broad extent
thoroughly
vsinside and out
259 3.5

To do something completely and carefully

is about being complete in every detail rather than only overall
in full
vsinside and out
131 1.7

Completely, with nothing missing

relates to detailed thoroughness rather than completeness of amount
through and through
vsinside and out
  • Informal
23 3.5

Completely in every part

stresses total completeness in parts rather than isolated detail
top to bottom
vsinside and out
21 3.2

To do something completely by checking every part

highlights complete coverage across parts rather than fine detail
inside out
vsinside and out
  • Informal
13 3.7

Completely and in every detail

is about being completely thorough in detail rather than viewpoint range
well and truly
vsinside and out
  • Informal
7 3.7

Completely and without doubt

expresses simple thoroughness rather than added emphasis or certainty
exhaustively
vsinside and out
  • Formal
6 6.7

In a way that includes every part and leaves nothing out

means complete in detail rather than just a deep search

Antonyms

14 5.3

In a way that only looks at the surface and not deeply

How Thorough

inside and out
  • Informal
33 3.5
mostly
1.0
partly
375 1.0

Surface Forms

inside and out positive

Morphology

inside + and + out

The meaning 'thoroughly, in every detail' is directly and transparently derived from combining 'inside' and 'out' (i.e. both interior and exterior aspects), so a learner who knows the constituent words can infer that something is known or examined completely. This compositional logic (covering all sides) is cross-linguistically common, making the phrase predictable for a B1 learner.

Etymology

Inside and out comes from the simple idea of checking something both inside and out, like looking at a car from the outside and then opening every door to see the inside. So, if you know something inside and out, you know it 'in every detail'.