: being the one mentioned or in question : identical left the selfsame day.

What is self sameness?

Definitions of selfsameness. the quality of being identical with itself. type of: identicalness, identity, indistinguishability. exact sameness.

What does sameness mean?

1 : the quality or state of being the same : identity, similarity. 2 : monotony, uniformity. Synonyms Example Sentences Learn More About sameness.