義妹[gimai] sister-in-law (younger)
兄妹げんか[kyoudaigenka] quarrel between siblings
吾妹子[wagimoko] my wife
吾妹[wagimo] my wife
姉妹会社[shimaigaisha] affiliated companies

姉妹都市[shimaitoshi] sister cities
従姉妹[itoko] cousin (female)
従妹[juumai] cousin (younger female)
弟妹[teimai] younger brother and sister
乳姉妹[chikyoudai] foster brother or sister

御寝小[onesho] bed-wetting
小便をする[shoubenwosuru] to pee
悪戯小僧[itazurakozou] mischievous boy
右小括弧[migishoukakko] closing parenthesis
永小作[eikosaku] perpetual land lease

英小文字[eikomoji] lower-case letters
仮小屋[karigoya] booth
過小[kashou] too small
過小評価[kashouhyouka] underestimation
甘い小説[amaishousetsu] sentimental novel