fountain: fonteno; f.-pen: fonten-plumo.
four: quar; f.-cornered, -square, -angled: quadri-angula; f. fold: quar-opla; f. oclock: (bot.) nokto-marvelo; to go on all f.s: marchar per quar pedi; f. score: oka-dek.
fourteen: dek-a-quar.
fourth: (ordinal) quar-esma, (fraction) -ima, -imo; (mus.) quarto.
fowl: pultr-o, -uno; han-o, -aro; ucel-o, -aro; wild f.: plum-vildo.
fowler: ucel-kapt-isto, -ero; vild-kapt-isto, -vendisto.
fowling-piece: ucel-fus-ilo; chas-fusilo.
fox: fox-o; f. hunter: foxo-chas-isto, -ero; dog-f.: fox-hundo.
foxglove: digitalo.
foxy: (fig.) ruz-oza, -ema.
foyer: foyero.
fraction: fraciono; to divide into f.s: -igar.
fractious: ne-docila, mal-humor-a.
fracture: rupt-uro, -ar; compound f.: -uro komplik-ita.
fragile: (also fig.) frajila (cf. delikata).
fragment: fragmento (cf. eskombro, rupt-peco); to reduce to f.s: -igar (ulo); -ary: -a, -ala.
fragrance: parfumo (cf. aromo).
fragrant: parfum-oza, bon-odor-anta, -oza; (artificially) parfum-iz-ita.
frail: (things) frajila; (persons) febla; debila; -ty: (phys., moral) frajil-eso; (health) debila; kaduka.
frame: (form) formacar; (put in a f.) en-kadr-igar, -izar; (formulate) formul-igar, -izar.
frame: (n.) (f.work as of a machine, a wagon) framo; (as of a picture) kadro; (scaffold) eshafodo; (bldg., ship) trab-aro; (cf. cirkum-ajo; korpo; strukturo); f. of mind: mentala stando.
franc: (money) franko.
franchise: vot-yuro.
Franciscan: franciskano.
francolin: frankolino.
frangipane: frangipano.
frank: (prepay postage) afrankar.
frank: (adj.) sincera, honesta, kandida, sen-artifica; (cf. apertita, libera, sen-jena, ne-cel-ita).
frankincense: olibano (cf. incenso).
frantic: frenezi-oza, dementa; fola; delir-atra, -ema.
fraternal: frat-ala, -atra.
fraternity: (brotherliness) frat-eso; (society) kun-frat-aro, societo.
fraternize: frat-eskar (kun).
fratricide: frat-ocid-o, (person) -anto, -into; -daclass="underline" -anta.
fraud: (act) fraud-(ad)o; (cf. dolo; trompo); (person) (defrauder) fraud-anto, -ero; -ulent: -a, -oza.
fraught: charj-ita.
fray: kombato, konflikto, batalio.
fray out: franj-igar, -eskar; lacerar.
freak: kaprico; (of nature) fantazio, -ajo natur-ala; persono deform-ita; monstro; -ish: kapric-oza, -ema.
freckle: lentigino, (v.) -igar, -eskar; -d: -oza.
free: liber-igar, -eskar; des-inkombrar, des-intrikar.
free: (adj.) liber-a, (person) -o, -ulo, -ino; (cf. prefix sen-; quita; gratuita, sen-paga; afrank-ita; sen-imposta, imuna); f. wilclass="underline" arbitrio; f. trade: libera kambio; f. thinker: libera pens-ero.
freebooter: pirato; marod-ero, -isto.
freeborn: libere nask-inta.
freedom: libereso.
freehold: libera (od, imuna) tereno (od, domeno), od, posed-ajo.
freemason: framasono.
freestone: (cut rock) quadro.
freeze: (intr.) frostar; (tr.) -igar; (become, make ice) glaci-eskar, -igar; (solidify) (tr., intr.) konjelar; solid-eskar, -igar; a hard f.: forta frosto; a f.ing rain: frosto-pluvo.
freight: (charter) fretar; (lade) charjar; (n.) karg-ajo; f. cost: freto-pago, -preco; f. car: (covered) var-vagono; (open) truko.
French: Franca.
frenzied: frenezi-oza, -ema; delir-anta, -ema, -atra.
frenzy: frenezio; a fit of f.: aceso di -o.
frequent: frequentar; (adj.) frequa, ofta; (road, etc.) frequent-ata, -ita.
fresco: fresk-o; to f.: freske piktar.
fresh: (recently made, etc.) fresha; (new) nova; recenta; (pure) pura; (not salt) sen-sala; -en: (plu-, ri-) fresh-igar, -eskar; (wind) fort-eskar; to destroy the f.ness of: des-fresh-igar.
fret: (as the skin) exkoriar, lacerar; (phys. and fig.) iritar; (mental) des-quiet-igar, -eskar; molestar; despitar.
fretful: plend-ema; irit-ebla; irac-ema.
friable: friabla.
friar: monak-(ul)o.
fricasée: frikas-ar; -ajo.
friction: (rubbing) friciono; (discord) des-konkordo.
Friday: venerdi-o; Good F.: -o santa.
friend: amik-(ul)o; to become a f.: -eskar; -liness: -eso; -ly: -a, -ala; f.ly act: amik-al-ajo, -ala ago.
frieze: (arch) friso; (fabric) burelo.
frigate: fregat-o; f. bird: -ucelo.
fright: (subita) pavor-o (cf. teroro, alarmo, paniko, hororo); (fig.) led-(ul)o, -ajo; take f.: pavor-eskar.
frighten: pavor-igar, teror-igar; to be f.ed: terorar (intr.).
frightful: teror-ig-anta, -iva; horor-inda; (fig.) led-ega; abomininda.
frigid: kold-(eg)a; glaci-ala (zone, look); -ity: kold-(eg)eso.
frigorific: frigorif-anta, -iva.
frill: jaboto; falbalo; plis-uro.
fringe: (border of loose threads) franjo; franjo-buli; (edging) paspelo; (border) bord-o, -umo; to put on f.: franj-izar; to f.: (fray out) -igar, -eskar.
frippery: (old clothes, etc.) frip-aji, -aj-aro.
frisk: (wriggle) friskar, (intr.) salt-etar; (intr.) petular; (romp) (intr.) gambolar; -y: petul-oza, -ema; frisk-ema; gaya.
fritter: frit-ajo; f. away: disipar.
frivolity: (quality) frivol-eso, (act) -ajo.
frivolous: frivola; (person) -(ul)o.
frizzle: (tr., intr.) friz-ar; -ajo, -loklo.
fro, to go to and: irar e venar; irar de una latero a laltra.
frock: (robe) robo; (cf. vesto); (blouse) bluzo; (monks ) froko; f. coat: redingoto.
frog: (animal) rano; (for garment) frogo.
frolic: (intr.) fol-lud-etar; gambolar; petular; -some: fol-lud-ema; joy-oza; (prank) yun-es-ala stroko.
from: de; (according to) segun; (on account of) pro; (= out, with motion) ek (as: adportez la stulo ek la chambro); (indicating material) ek (as: vazo ek oro); f. when: de kande; f. that time: de pose, de lore; f. now henceforth: de nun; f. under: de-sub; f. behind: de-dop; to take f.: de-prenar; die f. hunger: mortar pro hungro; blind f. birth: blinda de nasko; f. what you say: segun to quon vu dicas.
front: (adj.) avan-a; front-a, -ala; (n.) avan-o; facio, fronto; (of a building) fasado; (front side of cloth, etc.) averso; in f.: avane; in f. of: avan; object in f.: avan (prep.); with the f. behind: kun lavano dope; f. room: avan-chambro; f. side to: averse; attack on the f.: atakar ye la fronto; a broad f.: larja fronto; f. line: (milit.) fronto-lineo; f. of a garment: fronto (od, adverso) di vesto; change of f.: (milit.) konversiono;frontaclass="underline" (attack, etc.) front-ala; frontage: fasado (of bldg.).
frontier: frontiero.
frontispiece: frontispico.
fronton: frontono.
frost: (hoar, white f.) pruin-o; there is f.: (impers.) -as; f.-covered: -oza, -iz-ita; to get f.bite: frostar; f.-bound: reten-ita, -ata da glacio; -y: (full of f.) pruin-oza; (cold) kold-(et)a; glaci-ala, -atra.