金無垢[kinmuku] pure gold
歯垢[shikou] (dental) plaque
耳垢[mimiaka] earwax
手垢[teaka] finger marks
無垢[muku] purity

頭垢[fuke] dandruff
垢抜ける[akanukeru] to refine
純真無垢[junshinmuku] pure
寒垢離[kangori] cold-water ablutions performed in winter

隈無く[kumanaku] all over
然り気無い[sarigenai] nonchalant
だらし無い[darashinai] slovenly
途轍も無い[totetsumonai] extravagant
とんでも無い[tondemonai] unthinkable

無け無し[nakenashi] very small amount which looks like nothing
無駄にする[mudanisuru] to render futile
悪虐無道[akugyakubudou] treacherous
意気地無し[ikujinashi] coward
一も二も無く[ichimonimonaku] unhesitatingly