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

アラビア数字[arabiasuuji] Arabic numeral
キリル文字[kirirumoji] Cyrillic character
ギリシア文字[girishiamoji] Greek character
羅馬字[roomaji] Latin alphabet
ロシア文字[roshiamoji] Russian character

異体字[itaiji] kanji variants
一字[ichiji] letter
一字千金[ichijisenkin] word of great value
一丁字[itteiji] single letter or character
一文字[ichimonji] straight line

隠忍[innin] patience
押っ忍[osu] greeting used between close male friends
勘忍[kannin] pardon
堪忍袋の緒が切れる[kanninbukuronoogakireru] to be out of patience
堅忍[kennin] perseverance

堅忍不抜[kenninfubatsu] indomitable perseverance
残忍[zannin] cruelty
恥を忍ぶ[hajiwoshinobu] to abide one's shame
忍ばせる[shinobaseru] to conceal
忍び[shinobi] stealth