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

途轍もない[totetsumonai] extravagant
一途[itto] way
一途に[ichizuni] wholeheartedly
開発途上国[kaihatsutojoukoku] developing country
帰途[kito] on the way back

三途の河[sanzunokawa] Sanzu River (Buddhist equivalent of the River Styx)
使途[shito] purpose for which money is spent
世途[seito] the world
先途[sendo] crisis in a battle
前途[zento] future prospects