词根词缀：fove-, fovei-

【来源及含义】Latin: pit

【同源单词】fovea, foveate, foveation, foveola, foveolar, foveolate

词根词缀：frag-, frang-, fract-, fring-

【来源及含义】Latin: break, breaking; broken; cracked

【相关词根词缀】 Related break, broken-word units: clast-; rupt-.

【同源单词】anfractuous, atmospheric refraction, conchifragous, diffract, diffraction, diffractive

词根词缀：frater-, frat-

【来源及含义】Latin: brother [family member]

【同源单词】archconfraternity, confrater, confraternity, confraternization, fraternal, fraternity

词根词缀：fren-

【来源及含义】Latin: rein, bridle, a bit (as in a horses mouth); by extension, a medical term for a connecting fold of membrane in the body

【同源单词】buccal frenum, effrenation, frenectomy, frenotomy, frenuloplasty, frenulum

词根词缀：frequen-, frequent-

【来源及含义】Latin: crowded, numerous; repeated, repetition, constant

【同源单词】audio frequency, frequence, frequency, frequent, frequentable, frequentation

词根词缀：frica-, frict-, -frice

【来源及含义】Latin: a rubbing, to rub

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "rub, rubbing; wear away; wipe": bruxo, brux-; terg-; tribo-; -tripsy; trit-.

【同源单词】affriction, antifriction, dentifrice, fricative, friction, friction layer

词根词缀：frigo-, frig-

【来源及含义】Latin: cold, frost; freezing

【相关词根词缀】 Cross references of word families that are related directly or indirectly to "winter, freezing, frost, and/or cold": algid- (cold, chilly); cheimo-, chimo- (winter, cold); crymo-, krymo- (cold, chill, frost); cryo-, kryo-; (cold, freezing); gel-, gelati- (freeze, frost, congeal); hiber- (winter, wintry); pago- (cold, freezing); psychro- (cold); rhigo- (cold, frost; shiver).

【同源单词】frigid, frigidarium, frigideserta, frigidity, frigidly, frigidness

词根词缀：front-, fronto-

【来源及含义】Latin: forehead, brow, the forepart of anything; that which projects

【同源单词】A fronte praecipitium a tergo lupi, affront, affront, affronter, anterofrontal, arctic front

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：frustrat-, frustra-

【来源及含义】Latin: in vain, in error; to deceive, to disappoint

【同源单词】biofraud, defraud, defrauded, defrauder, electoral fraud, fraud