Cacophonically

adv. [f. prec. + -LY².] = CACOPHONOUSLY.

1864.  Dk. Manchester, Court & Soc. Eliz. to Anne, II. 387. Zeno and Gasparini’s ‘Hamlet,’ or ‘Ambleto,’ as it is cacophonically rendered in Italian.

1881.  New Zealand Herald, 31 Dec., 6/6. Its [humbug’s] original concoctor knew the proper method of claiming the attention of the ear to its full sound and sense; so he coupled (cacophonically speaking) two antipathetic syllables together, a long, and a sharp one.