nefariouslyadv.

1599 T. Nashe Lenten Stuffe 57 Nefariously..prophaning & penetrates our holy fathers nostrils.

1659 J. Owen Integr. Hebrew & Greek Text in Wks. (1853) XVI. 413 They have wickedly and nefariously corrupted the text.

1695 in W. W. Wilkins Polit. Ballads (1860) II. 50 The Bar, the Pulpit, and the Press Nefariously combine To cry up an usurped pow'r.

1794 H. L. Piozzi Diary 18 Feb. in K. C. Balderston Thraliana (1942) II. 871 How could he but by such Advice, contrive to increase the Guilt of a woman so flagitiously, so nefariously wicked.

1827 W. Scott Life Napoleon V. i. 17 It was nefariously unjust.

1883 R. Broughton Belinda III. vii. 27 Was she..flirting very nefariously with them all?

1915 Amer. Jrnl. Internat. Law 9 26 A vessel might be in territorial waters for scores of miles, either innocently or nefariously.

1993 Flyer July 4/1 In the UK, the ground-bound community treats private pilots..as people with too much money nefariously gained, with whom we would not much like our children to associate.