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：-fer, -ferous

【来源及含义】Latin: to bear, to carry; to produce; to bring

【相关词根词缀】 Cross references of word families related to "bear, carry, bring": duc-; ger-; later-, -lation; phoro-; port-.

【同源单词】ad referendum, afferent, aquifer, auriferous, circumference, confer

词根词缀：frug-, fruct-

【来源及含义】Latin: fruit; from Old French fruit, from Latin fructus, "fruit, produce, profit" from frug-, stem of frui, "to use, to enjoy" (cognate with Old English brucan, "to enjoy"

【同源单词】fructescence, fructicole, fructiferous, fructification, fructifier, fructify

词根词缀：-ous, -ious, -eous

【来源及含义】Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

【相关描述】Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

【同源单词】abdominous, abiogenous, ablepharous, abstemious, acanthaceous, acanthocephalous