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

一般[ippan] general
一般に[ippanni] in general
一般化[ippanka] generalization
一般会計[ippankaikei] general accounting and finance
一般概念[ippangainen] general idea

一般社会[ippanshakai] general public
一般人[ippanjin] ordinary person
一般性[ippansei] generality
一般生活[ippanseikatsu] everyday life
一般的[ippanteki] popular

論う[agetsurau] to discuss
ファジィ理論[fajiiriron] fuzzy theory
意味論[imiron] semantics
異論[iron] different opinion
一元論[ichigenron] monism

一神論[isshinron] monotheism
一般論[ippanron] prevailing view
運命論[unmeiron] fatalism
概論[gairon] introduction
各論[kakuron] item-by-item discussion