diffiteor

dif-fĭtĕor, ēri, v. dep. a. [fateor], to disavow, to deny (very rare; perh. only in the foll. passages—for syn. v. denego init. ): numquam diffitebor multa me simulasse invitum, Planc. in Cic. Fam. 10, 8, 4; so with acc. and inf., Quint. 2, 17, 5:

obscenum opus,

Ov. Am. 3, 14, 28; Aus. Caes. 14.