嗣ぐ[tsugu] to succeed (someone in a business or inheritance)
継嗣[keishi] successor
後嗣[koushi] heir
嗣子[shishi] heir
嫡嗣[chakushi] legitimate heir

天津日嗣[amatsuhitsugi] imperial throne
世嗣[yotsugi] heir
養嗣子[youshishi] adoptive heir
皇嗣[koushi] Crown Prince
皇帝の嗣[kouteinoshi] Emperor's heir

其の後[sonoato] after that
已後[igo] after this
一死後[isshigo] after one out (in Baseball)
気後れ[kiokure] nervous
紀元後[kigengo] post-era

空前絶後[kuuzenzetsugo] (so marvelous or horrible that it may be) the first and probably the last
兄後[anigo] elder brother
月後れ[tsukiokure] a month or older
午後[gogo] afternoon
午後中[gogojuu] throughout the afternoon