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Definitions

one and the same

ADJECTIVE
equal
Synonyms
STRONGEST
balanced commensurate comparable corresponding equivalent identical proportionate
STRONG
according coordinate correspondent double duplicate egalitarian invariable level look-alike matched matching parallel same uniform
WEAK
break even evenly matched fifty-fifty homologous identic indistinguishable same difference spit and image stack up with tantamount to the same degree two peas in pod unvarying
Antonyms
STRONGEST
different dissimilar mismatched unequal unlike
STRONG
changing divergent inconsistent variable
WEAK
biased disproportionate not alike unequitable unfair unjust unmatched varying
ADJECTIVE
identical
Synonyms
STRONGEST
exact indistinguishable interchangeable
WEAK
Xerox carbon-copy corresponding dead ringer ditto double duplicate equivalent identic like like two peas in a pod look-alike matching same same difference selfsame spitting image tantamount twin very very same
Antonyms
STRONGEST
different
WEAK
dissimilar distinct diverse opposite unequal unlike
ADJECTIVE
synonymous
Synonyms
STRONGEST
compatible identical identified interchangeable
WEAK
alike apposite coincident convertible correspondent corresponding equal like same similar synonymic tantamount
Antonyms
STRONGEST
different dissimilar
WEAK
opposite polar unequal

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But it was always far-fetched that the two people could be one and the same, and that Chalamet could have pulled off rapping with EsDeeKid's Liverpudlian accent.

From BBC • Dec. 19, 2025

The GFDL’s models, including the first hurricane model, became the basis for both short-term weather outlooks and longer-range forecasts, or climate prediction, which soon became one and the same.

From Salon • Apr. 29, 2025

Perhaps, one day, they could be one and the same.

From Slate • Sep. 23, 2024

Because they’re synonyms — they are one and the same.

From Los Angeles Times • May 9, 2024

The geometrical centre of the globe and its centre of gravity were, he asserted, one and the same.

From "The Invention of Science" by David Wootton