奇怪しい[okashii] funny
怪しからん[keshikaran] outrageous
怪しげ[ayashige] questionable
怪しむ[ayashimu] to suspect
怪異[kaii] strangeness

怪我[kega] injury (to animate object)
怪我人[keganin] wounded or injured person
怪奇[kaiki] bizarre
怪傑[kaiketsu] man of extraordinary talent
怪死[kaishi] mysterious death

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