There are 737 words containing A, F and K, https://www.bestwordlist.com/c/a/3/wordswithafk.htm AFTERDECK AFTERDECKS AFTERMARKET AFTERMARKETS AFTERPEAK AFTERPEAKS AFTERSHOCK AFTERSHOCKS ALFAKI ALFAKIS ALKALIFIED ALKALIFIES ALKALIFY ALKALIFYING BACKDRAFT BACKDRAFTS BACKFALL BACKFALLS BACKFAT BACKFATS BACKFIELD BACKFIELDS BACKFILE BACKFILES BACKFILL BACKFILLED BACKFILLING BACKFILLINGS BACKFILLS BACKFIRE BACKFIRED BACKFIRES BACKFIRING BACKFISCH BACKFISCHES BACKFIT BACKFITS BACKFITTED BACKFITTING BACKFITTINGS BACKFLIP BACKFLIPPED BACKFLIPPING BACKFLIPPINGS BACKFLIPS BACKFLOW BACKFLOWS BACKLIFT BACKLIFTS BAKEOFF BAKEOFFS BASKETFUL BASKETFULS BASKETSFUL BEAKERFUL BEAKERFULS BEEFCAKE BEEFCAKES BEEFSTEAK BEEFSTEAKS BIOFEEDBACK BIOFEEDBACKS BLACKFACE BLACKFACED BLACKFACES BLACKFIN BLACKFINS BLACKFISH BLACKFISHES BLACKFLIES BLACKFLY BLANKETFLOWER BLANKETFLOWERS BREADKNIFE BREAKFAST BREAKFASTED BREAKFASTER BREAKFASTERS BREAKFASTING BREAKFASTS BREAKFRONT BREAKFRONTS BREAKOFF BREAKOFFS CALFLICK CALFLICKS CALFLIKE CALFSKIN CALFSKINS CHALKFACE CHALKFACES CLOCKFACE CLOCKFACES COCKCHAFER COCKCHAFERS COCKNEYFICATION COCKNIFICATION COCKNIFICATIONS COFFEEMAKER COFFEEMAKERS CORNFLAKE CORNFLAKES CRAFTSMANLIKE CRAFTWORK CRAFTWORKS CRAIGFLUKE CRAIGFLUKES CRANKSHAFT CRANKSHAFTS DANDYFUNK DANDYFUNKS DARKFIELD DESKFAST DESKFASTS DRAWKNIFE DWARFLIKE ECOFREAK ECOFREAKS FABRICKED FABRICKING FABRICKINGS FACEBOOK FACEBOOKED FACEBOOKING FACEBOOKS FACEMASK FACEMASKS FACEWORKER FACEWORKERS FACTORYLIKE FADLIKE FAIK FAIKED FAIKES FAIKING FAIKS FAIRNITICKLE FAIRNITICKLES FAIRNYTICKLE FAIRNYTICKLES FAIRYLIKE FAKE FAKED FAKEER FAKEERS FAKEMENT FAKEMENTS FAKER FAKERIES FAKERS FAKERY FAKES FAKEST FAKEY FAKEYS FAKIE FAKIER FAKIES FAKIEST FAKING FAKIR FAKIRISM FAKIRISMS FAKIRS FALLBACK FALLBACKS FALSEWORK FALSEWORKS FANCYWORK FANCYWORKS FANGLIKE FANK FANKED FANKING FANKLE FANKLED FANKLES FANKLING FANKS FANLIKE FARKLEBERRIES FARKLEBERRY FARMWORK FARMWORKER FARMWORKERS FARMWORKS FARNARKEL FARNARKELED FARNARKELING FARNARKELINGS FARNARKELS FARTLEK FARTLEKS FASTBACK FASTBACKS FATBACK FATBACKS FATHERLIKE FATLIKE FATSTOCK FATSTOCKS FAUNLIKE FAWNLIKE FEEDBACK FEEDBACKS FELLWALKER FELLWALKERS FIDDLEBACK FIDDLEBACKS FIGHTBACK FIGHTBACKS FILMMAKER FILMMAKERS FILMMAKING FILMMAKINGS FINBACK FINBACKS FINGERMARK FINGERMARKS FINMARK FINMARKS FINNACK FINNACKS FINNMARK FINNMARKS FIREBACK FIREBACKS FIREBREAK FIREBREAKS FIRECRACKER FIRECRACKERS FIREDRAKE FIREDRAKES FIREMARK FIREMARKS FISHCAKE FISHCAKES FISHYBACK FISHYBACKS FLACK FLACKED FLACKER FLACKERED FLACKERIES FLACKERING FLACKERS FLACKERY FLACKET FLACKETED FLACKETING FLACKETS FLACKING FLACKS FLAGSTICK FLAGSTICKS FLAK FLAKE FLAKED FLAKER FLAKERS FLAKES FLAKEY FLAKIER FLAKIES FLAKIEST FLAKILY FLAKINESS FLAKINESSES FLAKING FLAKS FLAKY FLAMELIKE FLANK FLANKED FLANKEN FLANKENS FLANKER FLANKERED FLANKERING FLANKERS FLANKING FLANKS FLAPJACK FLAPJACKS FLAPLIKE FLAPTRACK FLAPTRACKS FLAREBACK FLAREBACKS FLASHBACK FLASHBACKED FLASHBACKING FLASHBACKS FLASHPACKER FLASHPACKERS FLASK FLASKET FLASKETS FLASKS FLATBACK FLATBACKS FLATPACK FLATPACKS FLATPICK FLATPICKED FLATPICKER FLATPICKERS FLATPICKING FLATPICKS FLATSTICK FLATWORK FLATWORKS FLAXLIKE FLICKABLE FLICKERTAIL FLICKERTAILS FLOKATI FLOKATIS FLOODMARK FLOODMARKS FLOORWALKER FLOORWALKERS FLYBACK FLYBACKS FLYMAKER FLYMAKERS FOAMLIKE FOLDBACK FOLDBACKS FOLKLAND FOLKLANDS FOLKTALE FOLKTALES FOLKTRONICA FOLKTRONICAS FOLKWAY FOLKWAYS FOODBANK FOODBANKS FOOTBRAKE FOOTBRAKES FOOTMARK FOOTMARKS FOOTSTALK FOOTSTALKS FOREKNOWABLE FOREPEAK FOREPEAKS FORERANK FORERANKS FORESHANK FORESHANKS FORESLACK FORESLACKED FORESLACKING FORESLACKS FORESPAKE FORESPEAK FORESPEAKING FORESPEAKS FORJASKIT FORKBALL FORKBALLS FORKHEAD FORKHEADS FORKTAIL FORKTAILS FORSAKE FORSAKEN FORSAKENLY FORSAKENNESS FORSAKENNESSES FORSAKER FORSAKERS FORSAKES FORSAKING FORSAKINGS FORSLACK FORSLACKED FORSLACKING FORSLACKS FORSPEAK FORSPEAKING FORSPEAKS FOXSHARK FOXSHARKS FRACK FRACKED FRACKER FRACKERS FRACKING FRACKINGS FRACKS FRAKTUR FRAKTURS FRAMEWORK FRAMEWORKS FRANK FRANKABLE FRANKALMOIGN FRANKALMOIGNS FRANKED FRANKER FRANKERS FRANKEST FRANKFORT FRANKFORTS FRANKFURT FRANKFURTER FRANKFURTERS FRANKFURTS FRANKINCENSE FRANKINCENSES FRANKING FRANKLIN FRANKLINITE FRANKLINITES FRANKLINS FRANKLY FRANKNESS FRANKNESSES FRANKPLEDGE FRANKPLEDGES FRANKS FRANKUM FRANKUMS FREAK FREAKED FREAKERIES FREAKERY FREAKFUL FREAKIER FREAKIEST FREAKILY FREAKINESS FREAKINESSES FREAKING FREAKISH FREAKISHLY FREAKISHNESS FREAKISHNESSES FREAKOUT FREAKOUTS FREAKS FREAKY FRIEDCAKE FRIEDCAKES FRIKKADEL FRIKKADELS FRISKA FRISKAS FRUITCAKE FRUITCAKES FUCKFACE FUCKFACES FUCKHEAD FUCKHEADS FULLBACK FULLBACKS FUNCKIA FUNCKIAS FUNKADELIC FUNKIA FUNKIAS FUTHARK FUTHARKS GODFORSAKEN HALFBACK HALFBACKS HALFBEAK HALFBEAKS HALFTRACK HALFTRACKS HANDKERCHIEF HANDKERCHIEFS HAYFORK HAYFORKS HEADFUCK HEADFUCKS JACKFISH JACKFISHES JACKFRUIT JACKFRUITS JACKKNIFE JACKKNIFED JACKKNIFES JACKKNIFING JACKSHAFT JACKSHAFTS JACKSTAFF JACKSTAFFS JAKFRUIT JAKFRUITS KAF KAFFEEKLATSCH KAFFEEKLATSCHES KAFFIR KAFFIRS KAFFIYAH KAFFIYAHS KAFFIYEH KAFFIYEHS KAFILA KAFILAS KAFIR KAFIRS KAFS KAFTAN KAFTANS KAFUFFLE KAFUFFLES KAIF KAIFS KALEWIFE KALIF KALIFATE KALIFATES KALIFS KARSTIFICATION KARSTIFICATIONS KARSTIFIED KARSTIFIES KARSTIFY KARSTIFYING KEFALOTIRI KEFALOTIRIS KEFALOTYRI KEFALOTYRIS KEFFIYAH KEFFIYAHS KENAF KENAFS KEYFRAME KEYFRAMES KHAF KHAFS KHALIF KHALIFA KHALIFAH KHALIFAHS KHALIFAS KHALIFAT KHALIFATE KHALIFATES KHALIFATS KHALIFS KHARIF KHARIFS KHILAFAT KHILAFATS KINGCRAFT KINGCRAFTS KLANGFARBE KLANGFARBES KNIFEMAN KNIPHOFIA KNIPHOFIAS KOFTA KOFTAS KOFTGAR KOFTGARI KOFTGARIS KOFTGARS KORFBALL KORFBALLS KRAFT KRAFTS KUFIYAH KUFIYAHS LAKEFILL LAKEFILLS LAKEFRONT LAKEFRONTS LEAFLIKE LEAFSTALK LEAFSTALKS LEAKPROOF LIFEHACK LIFEHACKED LIFEHACKER LIFEHACKERS LIFEHACKING LIFEHACKS LIFTBACK LIFTBACKS LOCKFAST MAFFICK MAFFICKED MAFFICKER MAFFICKERS MAFFICKING MAFFICKINGS MAFFICKS MAKEFAST MAKEFASTS MAKESHIFT MAKESHIFTS NAKFA NAKFAS NEUROFEEDBACK NEUROFEEDBACKS OAKLEAF OFFPEAK OFFTAKE OFFTAKES OFFTRACK OUTFLANK OUTFLANKED OUTFLANKING OUTFLANKS OVERFRANK PACKFONG PACKFONGS PACKFRAME PACKFRAMES PACKSTAFF PACKSTAFFS PAKFONG PAKFONGS PAPERKNIFE PIKESTAFF PIKESTAFFS PRANKFUL PREBREAKFAST PREFRANK PREFRANKED PREFRANKING PREFRANKS PUFFBACK PUFFBACKS RACKFUL RACKFULS RAKEOFF RAKEOFFS RANKSHIFT RANKSHIFTED RANKSHIFTING RANKSHIFTS RATFINK RATFINKS ROCKFALL ROCKFALLS ROCKSHAFT ROCKSHAFTS SACKFUL SACKFULS SACKSFUL SAFECRACKER SAFECRACKERS SAFECRACKING SAFECRACKINGS SAFEKEEPING SAFEKEEPINGS SCARFSKIN SCARFSKINS SEAFOLK SEAFOLKS SHEAFLIKE SHELFTALKER SHELFTALKERS SHRINKFLATION SHRINKFLATIONS SIFAKA SIFAKAS SNAKEFISH SNAKEFISHES SNOWFLAKE SNOWFLAKES SOAPFLAKES SOFTBACK SOFTBACKS SOOTFLAKE SOOTFLAKES SPEEDFREAK SPEEDFREAKS STARFUCKER STARFUCKERS STARFUCKING STARFUCKINGS SUPERFLACK SUPERFLACKS TACKIFIED TACKIFIER TACKIFIERS TACKIFIES TACKIFY TACKIFYING TAKEOFF TAKEOFFS TALKFEST TALKFESTS TANKFUL TANKFULS THANKFUL THANKFULLER THANKFULLEST THANKFULLY THANKFULNESS THANKFULNESSES THICKLEAF TRADESFOLK TRADESFOLKS TRAFFICKED TRAFFICKER TRAFFICKERS TRAFFICKIER TRAFFICKIEST TRAFFICKING TRAFFICKINGS TRAFFICKY UNFAKED UNFOREKNOWABLE UNFORSAKEN UNFRANKED UNTHANKFUL UNTHANKFULLY UNTHANKFULNESS WAIFLIKE WAKEFUL WAKEFULLY WAKEFULNESS WAKEFULNESSES WAKERIFE WAKF WAKFS WAUKRIFE WEAKFISH WEAKFISHES WORKFARE WORKFARES WORKSAFE WRACKFUL WREAKFUL ZINCKIFICATION ZINCKIFICATIONS ZINKIFICATION ZINKIFICATIONS