ブチ殺す[buchikorosu] to kill by hitting
押殺す[oshikorosu] to crush to death
あっ殺[assatsu] crushing to death
暗殺[ansatsu] assassination
暗殺事件[ansatsujiken] assassination

一殺那[issetsuna] (a) moment
殴り殺す[nagurikorosu] to strike dead
殴殺[ousatsu] beating to death
皆殺し[minagoroshi] massacre
かみ殺す[kamikorosu] to stifle a smile, yawn, etc.

お生憎様[oainikusama] that's too bad (ironical)
御誕生日おめでとうございます[otanjoubiomedetougozaimasu] Happy Birthday
隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
生きがいい[ikigaii] fresh (e.g. fish)
コンピューター援用生産[konpyuutaaenyouseisan] computer-aided manufacture

委託生[itakusei] scholarship student sent by government office or business
生す[nasu] to build up
異常発生[ijouhassei] plague
医学生[igakusei] medical student
医学生物学[igakuseibutsugaku] medical biology