永久歯[eikyuushi] permanent tooth
永久性[eikyuusei] permanency
永久脱毛[eikyuudatsumou] removing hair permanently
久しい[hisashii] long
久しく[hisashiku] for a long time

久し振りに[hisashiburini] after a long time
久し振り[hisashiburi] a long time (since the last time)
久懐[kyuukai] long-cherished hope
久慈目[kujime] spotbelly greenling (Hexagrammos agrammus)
久方[hisakata] sky

悠悠自適[yuuyuujiteki] living a life of leisure with dignity
悠久[yuukyuu] eternity
悠然[yuuzen] with an air of composure
悠長[yuuchou] leisurely
悠揚[yuuyou] self-possessed

悠悠[yuuyuu] quiet
悠遠[yuuen] faraway
悠悠自適の生活[yuuyuujitekinoseikatsu] life free from worldly cares
悠悠閑閑[yuuyuukankan] composed and unhurried
悠揚迫らぬ[yuuyousemaranu] calm