一も二も無く[ichimonimonaku] unhesitatingly
一言二言[hitokotofutakoto] a word or two
一石二鳥[issekinichou] killing two birds with one stone
一二に及ばず[ichininioyobazu] right away
一姫二太郎[ichihimenitarou] It's good to have a girl first and then a boy

うり二つ[urifutatsu] as alike as two melons (two peas in a pod)
黄道十二宮[koudoujuunikyuu] twelve signs of the zodiac
二度[futatabi] again
最小二乗法[saishounijouhou] least-squares method
三十二分音符[sanjuunibuonpu] 32nd note

圧接[assetsu] pressure welding
引接[insetsu] interview
応接[ousetsu] reception
応接セット[ousetsusetto] lounge suite
応接間[ousetsuma] reception room

応接室[ousetsushitsu] drawing room
外接[gaisetsu] circumscription
間接[kansetsu] indirection
間接照準射撃[kansetsushoujunshageki] indirect fire
間接税[kansetsuzei] indirect tax

為続ける[shitsuzukeru] to continue to do
遺産相続[isansouzoku] inheritance
永続[eizoku] permanence
永続性[eizokusei] persistent
家続き[ietsuzuki] row of houses

家督相続[katokusouzoku] inheritance
共同相続人[kyoudousouzokunin] joint heir
勤続[kinzoku] continuous service
勤続者[kinzokusha] man of long service
続ぐ[tsugu] to succeed (someone in a business or inheritance)

意味深重[imishinchou] with profound (often hidden) meaning
一重ね[hitokasane] suit
一重継ぎ[hitoetsugi] sheep bend (knot)
一重桜[hitoezakura] cherry tree bearing single blossoms
荷重[kajuu] load

過重[kajuu] overweight
気が重い[kigaomoi] depressed
貴重[kichou] precious
貴重品[kichouhin] valuables
起重機[kijuuki] crane