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

恒温器[kouonki] incubator
恒久[koukyuu] permanent
恒久化[koukyuuka] making permanent
恒常[koujou] constancy
恒心[koushin] steadiness

恒星[kousei] (fixed) star (i.e. not a planet, meteorite, etc.)
恒等式[koutoushiki] identity
恒例[kourei] established practice
恒河沙[gougasha] 10^52 (or 10^56)
恒数[kousuu] a constant (e.g. in science)

リーダーシップ的地位[riidaashipputekichii] leadership position
圧制的[asseiteki] oppressive
圧倒的[attouteki] overwhelming
圧倒的多数[attoutekitasuu] overwhelming numbers
意図的[itoteki] intentional

一義的[ichigiteki] unequivocable
一元的[ichigenteki] monistic
一時的[ichijiteki] temporary
一般的[ippanteki] popular
一般的なルールとして[ippantekinaruurutoshite] as a general rule