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

ゼロ地点[zerochiten] ground zero
圧痛点[attsuuten] pressure point
一致点[icchiten] point of agreement
一点[itten] speck
一点機[ichitenki] turning point

一点張り[ittenbari] persistence
引火点[inkaten] flash point
遠地点[enchiten] apogee
遠日点[enjitsuten] aphelion

お願い致します[onegaiitashimasu] please
如何致しまして[douitashimashite] you are welcome
一致[icchi] coincidence
一致点[icchiten] point of agreement
引致[inchi] arrest

雅致[gachi] artistry
共同一致[kyoudouicchi] unanimous cooperation
極致[kyokuchi] culmination
言行一致[genkouicchi] acting up to one's words
合致[gacchi] agreement