to study / to discount, to reduce the price of something

studying, studies, study

Alternative form of 勉強

the Japanese language

to cross, go over / pass time / move house / to exceed, surpass

imperfective and stem (or continuative) forms of 越す (kosu) [ichidan]

through something / 2019, アニメ会社で火事 少なくとも12人死亡 多数連絡取れず 京都, in NHKニュース https://web.archive.org/web/20190718130130/https://www3.nhk.or.jp/news/html/20190718/k10011996791000.html

It is best to

to go; to come to one's place / to (a letter) be delivered / to depart / to rely (on a method) / (年が～) to age / (うまく～) to go well / イく: (slang) to have an orgasm, to come, to cum

volitional form of 行く (iku, yuku) [godan]