仇討[adauchi] vengeance
かたき討ち[katakiuchi] vengeance
討つ[utsu] to shoot (at)
検討[kentou] consideration
検討委員会[kentouiinkai] investigative commission

再検討[saikentou] re-examination
剿討[soutou] cleaning up
相討ち[aiuchi] simultaneously striking one another (in kendo, etc.)
尊王討幕[sonnoutoubaku] reverence for the emperor and the overthrow of the shogunate
討ち破る[uchiyaburu] to break

闇い[kurai] dark
暗闇[kurayami] darkness
闇然[anzen] dark
闇雲[yamikumo] recklessly
闇愚[angu] imbecility

闇値[yamine] black-market price
闇路[yamiji] dark road
五月闇[satsukiyami] dark night in the rainy season
無闇に[muyamini] thoughtlessly