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

一遍[ippen] once
何遍[nanben] how many times
何遍も[nanbenmo] repeatedly
百万遍[hyakumanben] million times
遍く[amaneku] widely

普遍性[fuhensei] catholicity
普遍妥当性[fuhendatousei] ability to fit into any situation
普遍的法則[fuhentekihousoku] universal law
遍在[henzai] omnipresence
遍歴[henreki] travels