unassimilable
adjective
un·as·sim·i·la·ble ˌən-ə-ˈsi-mə-lə-bəl 
: not able to be taken in or absorbed : not capable of being assimilated
… misfits … and revolutionaries deemed unassimilable by mainstream culture
James Traub
James Trauban unassimilable ideology
unassimilably
ˌən-ə-ˈsi-mə-lə-blē
adverb 
Example Sentences
Recent Examples on the Web This approach has raised anew the bugbear of the unassimilable Other in our midst. Michael Luo, The New Yorker, 23 Aug. 2021 Moreover, conscripts returning from the war had to reassume civilian identities, thus introducing a troubling doubling of their own psyches: such extraordinary memories were quite simply unassimilable by their quotidian minds. Will Self, Harper's Magazine, 23 Nov. 2021 Many perceived the Chinese to be a heathen race, unassimilable and alien to the American way of life. Michael Luo, The New Yorker, 22 Apr. 2021 Right until the moment his life was extinguished, his art was truculent, bold, arresting and unassimilable. Philip Kennicott, Washington Post, 21 Aug. 2019 Spiegelman employed a popular cultural medium — comics — to render the unassimilable experience of growing up in postwar America as a child of Holocaust survivors. New York Times, 16 July 2019 The European political center was killed by the political elites who opened the floodgates to unassimilable Muslim immigrants who the elites didn’t have to live with but their citizens did. Gerard Baker, WSJ, 6 Mar. 2018 See More
Michael Luo, The New Yorker, 23 Aug. 2021 Moreover, conscripts returning from the war had to reassume civilian identities, thus introducing a troubling doubling of their own psyches: such extraordinary memories were quite simply unassimilable by their quotidian minds. Will Self, Harper's Magazine, 23 Nov. 2021 Many perceived the Chinese to be a heathen race, unassimilable and alien to the American way of life. Michael Luo, The New Yorker, 22 Apr. 2021 Right until the moment his life was extinguished, his art was truculent, bold, arresting and unassimilable. Philip Kennicott, Washington Post, 21 Aug. 2019 Spiegelman employed a popular cultural medium — comics — to render the unassimilable experience of growing up in postwar America as a child of Holocaust survivors. New York Times, 16 July 2019 The European political center was killed by the political elites who opened the floodgates to unassimilable Muslim immigrants who the elites didn’t have to live with but their citizens did. Gerard Baker, WSJ, 6 Mar. 2018 See More Word History
First Known Use
1873, in the meaning defined above