奇怪しい[okashii] funny
怪奇[kaiki] bizarre
奇しくも[kushikumo] strangely
奇異[kii] odd
奇っ怪[kikkai] strange

奇矯[kikyou] eccentric
奇遇[kiguu] unexpected meeting
奇形[kikei] birth defect
奇策[kisaku] clever scheme
奇習[kishuu] strange custom

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