いい年をして[iitoshiwoshite] (in spite of) being old enough to know better
亥年[idoshi] year of the boar
一箇年[ikkanen] one year
一周年[isshuunen] one full year
一年以内に[ichineninaini] within a year

一年間[ichinenkan] (period of) one year
一年生[ichinensei] annual (plant)
一年草[ichinensou] annual (plant)
一年ぢゅう[ichinenjuu] all year round
一両年[ichiryounen] (a) year or two

嘘っ八百[usoppappyaku] full of lies
嘘八百[usohappyaku] full of lies
何百[nanbyaku] hundreds
五十歩百歩[gojuppohyappo] six of one and a half dozen of the other
三百[sanbyaku] 300

三百諸侯[sanbyakushokou] all the daimyos
三百代言[sanbyakudaigen] pettifogging lawyer
数百[suuhyaku] several hundreds
生誕百年[seitanhyakunen] 100th birthday anniversary
二百十日[nihyakutooka] 210th day (from the first day of spring according to the lunar calendar)

御目出度う御座います[omedetougozaimasu] congratulations
駄目になる[dameninaru] to spoil
繋ぎ目[tsunagime] joint
軽目焼[karumeyaki] hard caramelized sugar candy
駄目押し[dameoshi] making doubly sure

一つ目[hitotsume] one-eyed
一合目[ichigoume] the start of a climb up a hill
一丁目[icchoume] Block 1
ひと目[ichimoku] (a) glance
一目惚れ[hitomebore] to be taken with someone at first sight (similar to "love at first sight", but not as strong)