Lewis & Short

-cĕ, an inseparable strengthening demonstrative particle, answering etymol. to the Gr. γέ (Sanscr. ki; cf. Lat. ci-s and citra), and in signif. to the demonstr. ι (in οὑτοσί, τουτί, etc.), appended to words in different forms.

  1. I. Unchanged ce: hicce, haecce, hocce; also in MSS. and inscriptions one c: hice, etc.; plur.: hice, haece, haecce; gen. hujusce, etc.
  2. II. Changed,
    1. A. Into ci before the interrog. particle ne: hiccine, hoccine, siccine, nunccine, etc. (v. hic, sic, nunc, etc.).
    2. B. By a rejection of e, in hic, haec, hoc, nunc, etc. for hice, haece, hoce, nunce, etc.; illic, istic, nunc, sic (for illice, etc.); cf. Zumpt, Gram. § 132; Corss. Ausspr II. p. 235.