嫡嗣[chakushi] legitimate heir
嫡子[chakushi] legitimate child
嫡出子[chakushutsushi] legitimate child
嫡孫[chakuson] eldest son's descendants
嫡男[chakunan] heir

嫡披[chakuhi] confidential letter
嫡流[chakuryuu] lineage of eldest son
廃嫡[haichaku] disinheritance
正嫡[seichaku] legal wife
嫡妻[chakusai] one's legal wife

伊達男[dateotoko] dandy
一男[ichinan] boy
下女下男[gejogenan] servants
下男[genan] manservant
寡男[yamoo] widower

間男[maotoko] married woman's secret lover
既婚男性[kikondansei] married man
貴男[anata] you (referring to someone of equal or lower status)
男気[otokogi] chivalrous spirit
好男子[koudanshi] handsome man