Answer:
sadness, sagacious, salacious, sass, sassafras, scissors, seamless, seamstress, sedulous, sebaceous, selfless, serious, sideways, slippers, socks, softness, solicitous, sorceress, soulless, specious, spiders, stars, stasis, statistics, stiffness, stress, success, sumptuous, supercilious, superfluous, superstitious, suppositious, surreptitious, susurrus, Swiss, synthesis...