I.indef. pron. (v. Zumpt, Gr. § 740), if any, if any one: “si quis recte Tractaret,” Ter. Heaut. 1, 1, 100: “si qui (filius) natus esset,” Cic. Clu. 12, 33: “si qua tui Corydonis habet te cura,” Verg. E. 7, 40.—Adverb.: si qui and si qua, if in any way, if by any means: “si qui,” Liv. 3, 64 fin.; Plaut. Trin. 1, 2, 83: “si qua,” id. Cist. 1, 3, 35; Verg. A. 1, 18; Hor. C. 3, 14, 19: “si quo,” if any whither, Cic. Att. 8, 2, 1; “also,” if for any purpose, Liv. 37, 28: “si quid,” if at all, Verg. A. 5, 688; cf. 2. quis.
sī-quis or sī-qui , sīqua, sīquid or sīquod, or separately, sī quis , etc.,