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. 152: 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.