安全期[anzenki] safe period
暗黒期[ankokuki] eclipse period
一期[ichigo] one's life time
一期[ikki] one term
一期一会[ichigoichie] once-in-a-lifetime encounter (hence should be cherished as such)

一周期[isshuuki] period (in astronomy)
一定期間[itteikikan] fixed interval
延期[enki] postponement
延期になる[enkininaru] to be postponed
沖積期[chuusekiki] alluvial period

スポ根[supokon] heart (athletics)
羽根[hane] feather
円屋根[maruyane] dome
家根[yane] roof
卸し大根[oroshidaikon] grated daikon

下し大根[oroshidaikon] grated radish
下種根性[gesukonjou] mean feelings
夏大根[natsudaikon] summer daikon
禍根[kakon] root of evil
塊根[kaikon] tuberous root

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