adv. (UN-1 11, 5 b.)

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1796.  Mme. D’Arblay, Camilla, I. 358. The most unobtrusively gay … of almost any young creature I ever beheld.

2

1852.  W. Collins, Basil, II. i. He was dressed as unobtrusively as possible, entirely in black.

3

1884.  C. T. Saunders, in Law Times, 25 Oct., 412/2. The abolition of primogeniture was … unobtrusively proposed.

4