ppl. a. (UN-1 10.)
1799. Mirror, No. 10. To a stranger it would have been not unamusing.
1812. Q. Rev., VII. 384. It cannot be unamusing to speculate on what Warburton would have achieved.
1893. Swinburne, Stud. Prose & Poetry (1894), 74. Wit at Several Weapons, a violent farce, outrageous but not unamusing.
Hence Unamusingly adv.
1889. Swinburne, Study B. Jonson, I. 76. It is neither coarse nor tedious, and takes up but very little space; and that not unamusingly.