ちょっと一杯[chottoippai] let's have a quick drink
ばつ一[batsuichi] being once divorced
一向[hitaburu] nothing but
サラダ一皿[saradahitosara] plate of salad

安全第一[anzendaiichi] safety first
一か八か[ichikabachika] sink or swim
一っ走り[hitoppashiri] spin (as in 'take a car for a spin')
一つ一つ[hitotsuhitotsu] one-by-one

恐慌[kyoukou] panic
慌しい[awatadashii] busy
慌てふためく[awatefutameku] to get into a panic
慌てる[awateru] to become confused (disconcerted, disorganized, disorganised)
慌て者[awatemono] scatterbrain

大慌て[ooawate] great haste
金融恐慌[kinyuukyoukou] financial panic
安定恐慌[anteikyoukou] stabilization crisis
慌ただしい一生[awatadashiiisshou] fleeting life
大恐慌[daikyoukou] Great Depression

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