- 素晴らしい【すばらしい】 - wonderful, splendid, magnificent 
- 素敵【すてき】 - lovely, wonderful, nice, great, fantastic, superb, cool 
- 素直【すなお】 - obedient, meek, docile, unaffected, honest, frank, upfront (about one's feelings), straight (e.g. hair), without peculiarity, without mannerisms, standard, neat (e.g. handwriting) 
- 酸素【さんそ】 - oxygen (O) 
- 要素【ようそ】 - component, factor, item (e.g. in list), element (e.g. in array), member (e.g. data structure) 
- 素人【しろうと】 - amateur, layman, ordinary person, novice, respectable woman (i.e. not a prostitute, hostess, geisha), unlicensed prostitute 
- 素材【そざい】 - ingredient, (raw) material, resource, unprocessed timber, raw timber, subject matter, topic 
- 素早い【すばやい】 - quick, swift, nimble, agile, quick (understanding, judgement, etc.), alert, prompt 
- 素子【そし】 - element (esp. component in electronics), elemental device, device, data, datum 
- 素質【そしつ】 - makings (of), aptitude, talent, qualities, nature, character, temperament 
- 素朴【そぼく】 - simple, artless, naive, unsophisticated 
- 水素【すいそ】 - hydrogen (H) 
- 素顔【すがお】 - face with no make-up, unpainted face, true face (of a country, celebrity, etc.), real face, true picture, real nature, sober face, sobriety 
- 元素【げんそ】 - element, chemical element, (classical) element (e.g. earth, water, air, fire), origin, source 
- 素手【すで】 - bare hand, empty hand 
- 質素【しっそ】 - simple, plain, modest, frugal, reserved 
- 素粒子【そりゅうし】 - elementary particle, particle 
- 素描【そびょう】 - drawing, sketch, outline, summary, synopsis 
- 炭素【たんそ】 - carbon (C) 
- 簡素【かんそ】 - simple, plain, modest