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

翌る[akuru] next
翌月[yokugetsu] following month
翌週[yokushuu] the following week
翌日[yokujitsu] next day
翌年[yokunen] following year

翌朝[yokuasa] the next morning
翌翌[yokuyoku] the one after next
翌翌日[yokuyokujitsu] two days later
翌翌年[yokuyokunen] two years later
翌晩[yokuban] the following evening