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

御手盛り[otemori] making arbitrary decisions which benefit oneself
いたずら盛り[itazurazakari] mischievous age
人生の真っ盛り[isshounomassakari] the noontide of life
一盛り[hitosakari] temporary prosperity
一盛り[hitomori] pile

栄枯盛衰[eikoseisui] ups and downs of life
旺盛[ousei] full of vim and vigor
花盛り[hanazakari] flowers in full bloom
勤め盛り[tsutomezakari] the prime of one's career
最盛期[saiseiki] golden age