词根词缀：hepta-, hept-

【来源及含义】Greek: seven; normally used as a prefix

【同源单词】hebdomad, hebdomadal, hebdomadally, heptachord, heptachromic adjective, heptad

词根词缀：sui-

【来源及含义】Latin: self, of oneself

【同源单词】sui generis, sui juris, suicidal, suicidally, suicidology, suicism