21 letter words
BUCKMINSTERFULLERENES​34
20 letter words
BUCKMINSTERFULLERENE​33
PHOSPHOFRUCTOKINASES​39
19 letter words
PHOSPHOFRUCTOKINASE​38
16 letter words
UNSKILLFULNESSES​23
15 letter words (6 words)
COCKNEYFICATION​31
COCKNIFICATIONS​28
KAFFEEKLATSCHES​34
KARSTIFICATIONS​24
UNSKILFULNESSES​22
ZINCKIFICATIONS​35
14 letter words (20 words)
BLANKETFLOWERS​26
COCKNIFICATION​27
FECKLESSNESSES​23
FINGERPICKINGS​27
FLOUTINGSTOCKS​24
FOREKNOWLEDGES​26
FORSAKENNESSES​21
FREAKISHNESSES​24
HOUSEWIFESKEPS​29
KARSTIFICATION​23
LIFELIKENESSES​21
NEUROFEEDBACKS​26
SHRINKFLATIONS​24
SKILLFULNESSES​21
THANKFULNESSES​24
UNFOREKNOWABLE​26
UNSKILLFULNESS​21
UNTHANKFULNESS​24
ZINCKIFICATION​34
ZINKIFICATIONS​32
13 letter words (35 words)
HANDKERCHIEFS​29
MOTHERFUCKERS​27
FOREKNOWLEDGE​25
MOTHERFUCKING​28
NEUROFEEDBACK​25
FINGERPICKING​26
BACKFLIPPINGS​29
BLANKETFLOWER​25
BRICKFIELDERS​25
COCKFIGHTINGS​29
CRAFTSMANLIKE​24
CUCKOOFLOWERS​27
FAIRNITICKLES​22
FAIRNYTICKLES​25
FARKLEBERRIES​22
FARNARKELINGS​21
FINICKINESSES​22
FLOUTINGSTOCK​23
FOLKISHNESSES​23
FOREKNOWINGLY​27
12 letter words (80 words)
HANDKERCHIEF​28
MOTHERFUCKER​26
FRANKINCENSE​21
FIRECRACKERS​23
THANKFULNESS​22
COFFEEMAKERS​26
FOLKSONOMIES​21
FREETHINKERS​22
COCKFIGHTING​28
FRANKFURTERS​22
FIDDLESTICKS​23
FIELDWORKERS​23
FOLKLORISTIC​21
FREETHINKING​23
BREAKFASTING​22
AFTERMARKETS​21
BACKFILLINGS​24
BACKFITTINGS​24
BACKFLIPPING​28
BIOFEEDBACKS​26
11 letter words (151 words)
TRAFFICKING​24
AFTERMARKET​20
BIOFEEDBACK​25
KITESURFING​19
TRAFFICKERS​23
COFFEEMAKER​25
FRANKFURTER​21
FIRECRACKER​22
SAFEKEEPING​21
FARMWORKERS​23
AFTERSHOCKS​23
WAKEFULNESS​21
BACKFILLING​23
CRANKSHAFTS​23
KINGFISHERS​22
FREETHINKER​21
GODFORSAKEN​20
FLATPICKING​23
POCKETKNIFE​26
NECKERCHIEF​25
10 letter words (247 words)
BREAKFASTS​19
FRAMEWORKS​22
FILMMAKERS​21
THANKFULLY​23
FILMMAKING​22
KINGFISHER​21
FLICKERING​20
FLASHBACKS​24
CRANKSHAFT​22
SKILLFULLY​20
SNOWFLAKES​20
TRAFFICKED​23
AFTERSHOCK​22
LIFEHACKER​22
FOLKSONOMY​22
FEEDSTOCKS​20
WORKFORCES​22
FOOTLOCKER​19
FROLICKING​20
FARMWORKER​22
9 letter words (346 words)
BREAKFAST​18
FRAMEWORK​21
WORKFORCE​21
FRANKFURT​19
FIREWORKS​19
BOOKSHELF​21
FILMMAKER​20
CUFFLINKS​21
FLASHBACK​23
FRANKFORT​19
FIELDWORK​20
SNOWFLAKE​19
FEEDBACKS​21
LAKEFRONT​16
WORKFLOWS​22
FORKLIFTS​19
MAKESHIFT​21
PITCHFORK​23
KNOCKOFFS​25
FEEDSTOCK​19
8 letter words (346 words)
FEEDBACK​20
FRANKLIN​15
WORKFLOW​21
FOLKLORE​15
THANKFUL​18
FORKLIFT​18
FREAKING​16
FORESKIN​15
FORSAKEN​15
SKILLFUL​15
FALLBACK​19
FLANKING​16
LIFELIKE​15
KNOCKOFF​24
FIREWORK​18
BACKFILL​19
ROCKFISH​20
BACKFIRE​19
FRECKLES​17
BACKFLOW​22
7 letter words (174 words)
FUCKING​17
FRANKLY​17
FUCKERS​16
KICKOFF​23
FLICKER​16
TAKEOFF​17
FREAKED​15
FLANKED​15
FORSAKE​14
FLOCKED​17
SKILFUL​14
FLICKED​17
FORKING​15
KHALIFA​17
FLAKING​15
FLANKER​14
FRAKTUR​14
FLYBACK​21
FINICKY​19
FRANKED​15
6 letter words (95 words)
FUCKED​16
FREAKS​13
FREAKY​16
FUCKER​15
FRANKS​13
FLAKES​13
FLICKS​15
FLOCKS​15
FLASKS​13
FORKED​14
FICKLE​15
FAKING​14
FLANKS​13
FRISKY​16
KNIFES​13
FLAKED​14
FLECKS​15
FLAKEY​16
FOLKSY​16
FROCKS​15
5 letter words (67 words)
FRANK​12
FOLKS​12
KNIFE​12
FUNKY​15
FREAK​12
FORKS​12
FUCKS​14
FLOCK​14
FLICK​14
KRAFT​12
FAKES​12
FLUKE​12
FLASK​12
FLANK​12
FLAKE​12
FLECK​14
FAKED​13
FLAKY​15
FLACK​14
SKIFF​15
4 letter words (30 words)
FUCK​13
FOLK​11
FAKE​11
FORK​11
FUNK​11
FINK​11
FISK​11
FLAK​11
FILK​11
FIKE​11
KAIF​11
KERF​11
KEEF​11
FECK​13
KOFF​14
KIFF​14
FYKE​14
KIEF​11
WAKF​14
KIFS​11
3 letter words
KEF​10
KIF​10
KAF​10