すっかり
all completely thoroughly

すっきり
refreshed clear shapely neat

すっくと
straight upright erect

すったもんだ
擦った揉んだ confused

すっと
straight quickly directly all of a sudden quietly gently softly

すっとんきょう
素っ頓狂 wild in disarray harum-scarum hysteric

すっぱい
酸っぱい sour acid

すっぱだか
素っ裸 stark naked in ones bare skin penniless

すっぱぬき
素っ破抜き exposure disclosure an "expose" (in a magazine)

すっぱぬく
素破抜く to disclose to expose to unmask 素っ破抜く to expose

すっぱり
do something completely

すっぴん
face with no make-up

すっぽかす
to stand (someone) up to leave (something) undone to neglect (a duty)

すっぽん
鼈 snapping turtle mud turtle

すっぽんぽん
utterly stark naked wearing only one's birthday suit