fuin-o: (zool.) common (or beech-) marten (Mustela Foina). — FISL
fuk-o: (bot.) fucus, sea-weed, kelp. Def.: Ordinara genero di algo. — eFIS
ful-ar: (tr.) to tread (grapes), trample on (ulo); to full (cloth) (cf. tramplar). Def.: Pedo-presar (ulo) o marchar sur (ulo); (fig.) specala maniero traktar drapi; VI-114. Ex.: Fular la vitberi. La kavali fulis la gazono e la flori. — eFI
fulard-o: (fabric) foulard; (fig.) a silk handkerchief. — DEFR
fulgur-ar: (intr.) to fulgurate, flash as or like lightning (cf. fulminar); -pulvero: (photog.) flash-light powder.
fulgurit-o: (geol.) fulgurite. — DEFIRS
fuligin-o: soot; -oza, -atra: sooty, fuliginous; -ea: s. colored. — eFIS
fulk-o: (orni.) (bald) coot (genus: Fulica). — FISL
fulmin-ar: (tr., intr.) to fulminate, to lighten; to thunder and lighten; to flash; to blast (ulu); (fig.) to thunder forth (menaces, excommunication, etc. kontre ulu); -(ad)o: lightning, flash, fulmination; -stroko: thunderbolt, lightning stroke; -o-silenc-oza: heat-lightning; -anta: fulminating; para- -o: lightning-rod. — EFIS
fum-ar: (tr., intr.) to smoke; -izar: to cover with s.; to s. dry; -agar: (tr.) to fumigate; to s. out (ulu); -ag-ilo: fumigating apparatus; -oza; -if-anta: smoky; smoke-producing; -anto, -ero: smoker; -fend-uro: smoke fissure (cf. fumarolo); -karbono: smoking-coal, smoky bit of charcoal; -konsum-anta: s. consuming; -o-nigro: lamp-black. — eFIS
fumario: (bot.) fumitory (genus: Fumaria). — EFIS
fumarol-o: (volcanic) fumarole, smoke fissure (cf. fum-fend-uro). — DEFIS
funcion-ar: (intr.) to function (all senses): to function, act (kom), to perform the duties, fill an office, to work properly (of machinery, etc.); (cf. agar, laborar); -igar: to make work, set going, put in play; -(ad)o: function(ing): execution, performance; discharge (of duty); office, duty; (physiol., math.) function; -ala: functional; -ero: functionary; -er-ismo: officalism, administrative system, founded on the existence of a great number of functionaries. — DEF
fund-o: bottom, lowest part of something hollow, as b. of a vase, a well; that which stands at the bottom, as a liquid at the bottom of bottles; ground, solid substance under water, as of sandy b.; (fig.) basis, essential part; -e: at bottom, in the main, in reality; -izar: to bottom (a chair, etc.); sen- -a: bottomless; en la fundo di la holdo: in the b. of the hold; -o di lito: b. of a bed; -o di la maro: b. of the ocean; tushar -o: to touch b.; (fig.) la -o di pikturo: the background of a painting; veluro kun oratra -o: velvet with a gold(like) background; de l'fundo til la tekto: from the bottom to the roof; (fig.) wholly, from top to bottom; -o di spegulo: back of a mirror. — FIS
fundament-o: (pr. and fig.) that on which anything rests; foundation, groundwork, underpinning; (fig.) basis, ground; (cf. fond-uro, basamento); -ala: fundamental; -izar: to lay the f.s of (ulo). Ex.: La fundamento di edifico. La fundamenti di la universo, di la homala vivo, di la arti; Lua sistemo esas fundamentale nejusta. — DEFIRS
funel-o: funnel; -agar: (tr.) to pour (ulo) through a f.; -ego: (mill-)hopper; -fusilo: (firearm) blunderbuss. — E
funer-o: (ceremony) funeral, obsequies; -ala: funeral, funereal, mortuary; -isto: undertaker. — DEFIS
funest-a: baleful, disastrous, distressing, pernicious, malign. Def.: Expresas ideo plu forta kam nociva, ma ne esas exakte nek sempre mortigiva; signifikas kauzo od okaziono di nefeliceso; IV-267. Ex.: Funesta evento, novajo, pasiono, milito. Ant.: favoroza. — FIS
fung-o: (also med.) (bot.) fungus, mushroom, (edible or poisonous as toadstool); -o manj-ebla: edible (or common) m.; -ajo: (med., bot.) f. growth; -oza: fungous; -atra, -o-forma: f. like; f. shaped; -o-kultiv-eyo: f. bed. — EIL
funikular-a: funicular, dependent upon the tension of a cord, cable; -a fervoyo: f. railroad. — DeFIS
fuort-o: fort, fortified point, stronghold; (cf. fortreso). — DEFIRS
fur-o: fur (of animals; cf. felo); -oza, -iz-ita: furry, lined with fur; -izar: to line, cover with fur; -isto: furrier; -vesto, -ajo: fur garment, fur object. — EFS
furet-o: (zool.) ferret; (Putorius Furo); (fig.) ferret(er), inquisitive person; -agar: (intr.) to hunt with a f.; -umar: (tr.) to ferret out, pry into (ulo); -um-anto: a Paul Pry, searcher. — eFI
furgon-o: closed van or goods wagon (cf. kamiono); (milit.) baggage cart, ammunition wagon. Def.: Kargoveturo qua esas konstitucita ek kestego klozita en qua on inkluzas la vari; IV-291. — F
furi-ar: (intr.) to be in a state of extreme anger, momentary madness, immoderate passion; -igar: to infuriate (ulu); -o: rage; (myth.) Fury; -oza: furious, enraged. — DEFIRS
furier-o: (milit.) quartermaster (sergeant) (cf. quartermastro). - DFIS
furnaz-o*: (also fig.) furnace; ardor-oza-o: fiery furnace.
furnel-o: stove (for heating or cooking); kitchen-range; -ego: furnace; -if-isto: stove-maker; fuzo- -o: smelting-furnace. Def.: Aparato en qua on facas fairo; ol povas kontenar forno; IV-135. — FIS
furnis-ar: (tr.) to furnish, supply (ulo ad ulu); -ajo: thing supplied; -anto, -ero, -isto: furnisher, purveyor; (theat.) property-man. Ex.: Furnisar pano, mobli, informo. V. exp.: On provizas ulu per ulo; on furnisas ulo ad ulu; kp. livrar. — EFI