無慚[muzan] cruelty
冷酷無慚[reikokumuzan] cruel and heartless
慚愧[zanki] (feeling of) shame

慚愧に堪えない[zankinitaenai] feeling deeply ashamed of oneself
慚恚[zani] being ashamed and angry
慚死[zanshi] dying of shame

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