词根词缀：fac-, facil-, fact-, feas-, -feat, -fect, -feit, -facient, -faction, -fic-, -fy, -ficate, -fication

【来源及含义】Latin: to make, to do, to build, to cause, to produce; forming, shaping

【同源单词】Ab officio et beneficio, abortifacient, absorbefacient, absorbifacient, acoustoelectric effect, affair

词根词缀：sopor-, sop-

【来源及含义】Latin: sleep, deep sleep

【相关词根词缀】 Related "sleep" units: dorm-; hypno-; letho-; narco-; oneiro- (dream); somni-.

【同源单词】sopor, soporal, soporate, soporation, soporiferous, soporiferously