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

一個[ikko] piece
各個[kakko] every one
個室[koshitsu] private room
個条[kajou] article
個人[kojin] individual

個人タクシー[kojintakushii] privately owned taxi
個人教授[kojinkyouju] private instruction
個人経営[kojinkeiei] private management
個人個人[kojinkojin] individual

黄道十二宮[koudoujuunikyuu] twelve signs of the zodiac
丸十[marujuu] cross in a circle
五十音[gojuuon] the Japanese syllabary
五十音順[gojuuonjun] the syllabary order
五十三次[gojuusantsugi] the 53 Toukaidou stages

五十年祭[gojuunensai] jubilee
五十歩百歩[gojuppohyappo] six of one and a half dozen of the other
五十路[isoji] age fifty
三十戸[sanjikko] thirty houses
三十三所[sanjuusansho] any of a number of sets of thirty-three holy places enshrining Avalokitesvara (esp. those comprising a popular pilgrimage in the Kinki region)

テロ組織[terososhiki] terrorist organization
遺伝因子組替え[ideninshikumikae] recombinant gene splicing
改組[kaiso] reorganization
共済組合[kyousaikumiai] cooperative society
共同組合[kyoudoukumiai] cooperative

協同組合[kyoudoukumiai] cooperative
教養番組[kyouyoubangumi] educational channel
五人組[goningumi] five-family unit
娯楽番組[gorakubangumi] amusement program
骨組[honegumi] skeletal frame