まっ四角[masshikaku] square
一天四海[ittenshikai] the world
下四半期[shimoshihanki] last quarter (of the year)
弦楽四重奏曲[gengakushijuusoukyoku] string quartet
再三再四[saisansaishi] repeatedly

三寒四温[sankanshion] alternation of three cold and four warm days
四つ[yottsu] four
四つんばい[yotsunbai] (crawl) on all fours
四つ角[yotsukado] four corners
四つ足[yotsuashi] four-footed (animal)

獅子女[sufinkusu] sphinx
悪女[akujo] wicked or ugly woman
伊達女[dateonna] flapper
意中の女[ichuunoonna] sweetheart
王女[oujo] princess

乙女座[otomeza] Virgo (constellation)
乙女心[otomegokoro] girl's feeling
下種女[gesuonna] woman of low rank
下女[gejo] maid servant
下女下男[gejogenan] servants