Skholastyka is a rare form of Scholastica, which comes from the Latin word scholasticus (orator, rhetorician). This is also a Ukrainian word meaning “scholasticism, academic, scholastic.”
Smarahda is an archaic name meaning “emerald,” a feminine form of Greek name Smaragdos.
Snizhana derives from the Slavic root snežan (snowy).
Solomiya is the Ukrainian form of Salome, which derives from the Hebrew word shalom (peace).
Solomoniya is an archaic feminine form of Solomon, which comes from Hebrew name Shlomo. Its root is also shalom.
Svitlana is the Ukrainian form of Svetlana, which derives from Russian root svet (light, world).
Sakhno is an old folk form of Oleksandr (defender/helper of man).
Salyvon is a folk form of Roman name Silvanus (forest, woods).
Samiylo is a folk form of Samuel (asked of God).
Satsko is a folk form or diminutive of an unknown name, or of names with the letters sa (e.g., Saveliy, Samiylo, Isay, Sava).
Serhiy is the Ukrainian form of Sergey (my loser ex’s name), which comes from Roman family name Sergius. It might mean “servant” in Latin, but more likely is of unknown Etruscan origin.
Sofron is a rare form of the Greek name Sophron (sensible, self-controlled). The folk form is Suprun.
Spyrydon is the Ukrainian form of the Greek name Spyridon, which derives from either the Latin word spiritus (spirit) or the Greek word spyridion (basket).
Symon is a rare form of Simon, which comes from Hebrew name Shimon (he has heard). The usual Ukrainian forms are Semyon and Semen (and yes, I would STRONGLY urge people to avoid the latter spelling in an Anglophone country!).