sī-quis or sī-qui, sīqua, sīquid or sīquod, or separately, sī quis, etc.
* 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.