monoglottismn.
/ˈmɒnə(ʊ)ɡlɒtɪz(ə)m/, U.S. /ˈmɑnəˌɡlɑˌtɪz(ə)m/ rare.
Knowledge of or ability to speak only one language.
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the mind > language > a language > using or speaking languages > [noun] > monolingualism
monoglottism1892
monolingualism1899
1892 Western Mail (Cardiff) 19 Oct. 4/6 But, before dropping the subject, I should like to point out that the Genedl omits one qualification in a Welsh leader which ought surely to be a sine qua non—and that is Celtic monoglottism.
1903 P. C. Mitchell tr. E. Metchnikoff Nature of Man xii. 297 Naturally, when a number of men spoke only one and the same language, great solidarity was the result... But such a monoglottism is not the end of human progress.
a1981 G. B. Adams in M. Barry & P. Tilling Eng. Dial. Ulster (1986) 113 Two aspects of monoglottism are considered here.
This is a new entry (OED Third Edition, December 2002; most recently modified version published online June 2022).
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n.1892