sameness

plural samenesses

1. The quality of being the same; identity.

   However strange it may sound, it always seemed to me […] that Adrian's laughter-filled friendship with Schildknapp had something to do with the sameness of their eye color

   1997, Thomas Mann, chapter XX, in John E. Woods, transl., Doctor Faustus, New York: Vintage, published 1999, page 182

   1 more example

   All of them agreed that the working-classes must be kept in their place; and all of them perceived that American Democracy did not imply any equality of wealth, but did demand a wholesome sameness of thought, dress, painting, morals, and vocabulary.

   1922, Sinclair Lewis, chapter XXXIV, in Babbitt, New York, N.Y.: Harcourt, Brace and Company, →OCLC, page 391

2. The state of being equivalent; equality.

   Synonyms: egality, equality, equation, equivalence, evenness, par, parity

3. A tiring lack of variety; monotony.

   […] in the time when day follows day in dull, unexpectant sameness, and trial is a dreary routine,—it is then that despair threatens […]

   1860, George Eliot, The Mill on the Floss, Book IV, Chapter II

   1 more example

   O to sail to sea in a ship! / To leave this steady unendurable land, / To leave the tiresome sameness of the streets, the sidewalks and the houses, / To leave you O you solid motionless land, and entering a ship, / To sail and sail and sail!

   1892, Walt Whitman, “A Song of Joys”, in Leaves of Grass […], Philadelphia, Pa.: David McKay, publisher, […], →OCLC, page 148

   Synonyms: acedia, boredom, monotony, tediousness, tiresomeness, tedium, wearisomeness