[f. as prec. + -ING2.] Taking much upon oneself; taking for granted that one has a right to do so and so.
1695. Remarks Late Serm. (ed. 2), 25. With such assuming and reiterated Boldness.
1790. Burke, Fr. Rev., 40. I have seen very assuming letters, signed, Your most obedient, humble servant.
1863. Lady D. Gordon, Lett. Egypt (1875), 284. Bill was thought rather assuming, because he was asked in church and lawfully married.