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one and the same

one and the same

34 3.9
Exactly the same person or thing
  • idiom
translation icon : idéntico
  • His vocation and avocation are one and the same.
  • one and the same thing
  • one and the same person
  • at one and the same time

They're not one and the same and they don't need the same things.

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Examples

  • British and Arab interests are one and the same.

  • Clark Kent and Superman are one and the same.

  • These two are one and the same, no question.

  • My wife and I are one and the same, sir.

  • Now we are one and the same!

  • But our goal is one and the same.

  • But those names are all one and the same to her.

    Fiction book (2001)
  • However, reviewers argued that these were really one and the same activity.

    Academic text (1999)
  • For Sandback, his visible work and its invisible meanings are one and the same thing.

    Academic text (2012)
  • Clark Kent and Superman are one and the same.

Synonyms

same
vsone and the same
1.0

Exactly like the person or thing mentioned before

adds stronger emphasis that the two items are exactly identical
identical
vsone and the same
237 2.9

Being exactly the same in every detail as another

is used to stress that two items are exactly matching
selfsame
vsone and the same
  • Archaic
3 7.7

The exact same person or thing as before

is used to emphasize exact identity between two items
coreferent
vsone and the same
  • Specialized
9.9

Describing words that refer to the same person or thing

is a nontechnical emphatic phrase used beyond technical reference

Antonyms

1.0

Not the same as another person or thing

54 3.3

Containing many different kinds, not all the same

How Identical

one and the same
34 3.9
identical
237 2.9
same
1.0
alike
359 1.0

Surface Forms

one and the same positive

Morphology

one + and + the + same

The phrase 'one and the same' directly expresses identity: 'one' (a single unit) combined with 'same' (identical) yields the meaning of exact equivalence, with 'and the' functioning as an emphatic linker. This is a compositional, cross-linguistically common pattern, so a B1 learner who knows the constituent words should be able to infer the MWE's meaning.

Etymology

One and the same paints a simple image: two names or things are really a single thing. It links one and the same to show they are not two different things. So one and the same means 'exactly the same'.