13-letter words starting with F

There are 377 13-letter words starting with F, from familiar fundamentally to specialist fossiliferous.

377 wordsTop pick FUNDAMENTALLYHighest score FRIZZLINESSES 34

3 of 377 are everyday words (1%). Mostly rare words: great for Scrabble, tough for daily puzzles.

Letter
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

P starts the most 13-letter words (1,597); Y starts the fewest (10). F ranks #16 of 26. The bar under each letter shows the size of its list.

Length
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Best words to play first 377 · most-used first

FUNDAMENTALLY₂₂
FUNCTIONALITY₂₁
FRAGMENTATION₁₉
FERTILIZATION₂₅
FANTASTICALLY₂₁
FORTIFICATION₂₁
FORESHADOWING₂₄
FLABBERGASTED₂₂
FEATHERWEIGHT₂₆
FORGETFULNESS₂₀
FERTILISATION₁₆
FRUSTRATINGLY₂₀
FALSIFICATION₂₁
FRIGHTENINGLY₂₄
FICTIONALIZED₂₈
FACTORIZATION₂₇
FUNCTIONARIES₁₈
FRACTIONATION₁₈
FOSSILIFEROUS₁₉
FINGERPRINTED₂₀
FERROMAGNETIC₂₁
FLAMETHROWERS₂₄
FOREKNOWLEDGE₂₅
FUNCTIONALISM₂₀
FORMALIZATION₂₇
FILIBUSTERING₁₉
FUNCTIONALIST₁₈
FICTIONALISED₁₉
FAMILIARIZING₂₈
FERROELECTRIC₂₀
FEARMONGERING₂₀
FASCINATINGLY₂₂
FELICITATIONS₁₈
FETISHIZATION₂₈
FLEXIBILITIES₂₅
FOSSILIZATION₂₅
FERMENTATIONS₁₈
FORESHORTENED₂₀
FORTUNETELLER₁₆
FOREGROUNDING₁₉
FINGERPICKING₂₆
FAITHLESSNESS₁₉
FLOODLIGHTING₂₂
FLUORESCENTLY₂₁
FLIRTATIOUSLY₁₉
FORMALISATION₁₈
FAMILIARISING₁₉
FLUOROCARBONS₂₀

Showing the top 48 of 377 words. See every valid word

All valid words 377

A to Z. Includes rare and Collins-only words. Linked tiles open the word's meaning, score and rhymes.

FACETIOUSNESS₁₈
FACILITATIONS₁₈
FACTIONALISMS₂₀
FACTIONALISTS₁₈
FACTORABILITY₂₃
FACTORISATION₁₈
FACTORIZATION₂₇
FACTUALNESSES₁₈
FACULTATIVELY₂₄
FADDISHNESSES₂₁
FAIRNITICKLES₂₂
FAIRNYTICKLES₂₅
FAITHLESSNESS₁₉
FALLIBILITIES₁₈
FALSIFICATION₂₁
FAMILIARISERS₁₈
FAMILIARISING₁₉
FAMILIARITIES₁₈
FAMILIARIZERS₂₇
FAMILIARIZING₂₈
FANATICALNESS₁₈
FANFARONADING₂₁
FANTASMICALLY₂₃
FANTASTICALLY₂₁
FANTASTICATED₁₉
FANTASTICATES₁₈
FANTASTICISMS₂₀
FARADISATIONS₁₇
FARADIZATIONS₂₆
FARAWAYNESSES₂₂
FARCICALITIES₂₀
FARKLEBERRIES₂₂
FARNARKELINGS₂₁
FARTHINGLANDS₂₁
FASCICULATELY₂₃
FASCICULATION₂₀
FASCINATINGLY₂₂
FASCISTICALLY₂₃
FASHIONMONGER₂₂
FATEFULNESSES₁₉
FATHEADEDNESS₂₁
FATIGABLENESS₁₉
FATUOUSNESSES₁₆
FAULTFINDINGS₂₁
FAULTLESSNESS₁₆
FAUNISTICALLY₂₁
FAVORABLENESS₂₁
FAVOREDNESSES₂₀
FAWNINGNESSES₂₀
FEARFULNESSES₁₉
FEARMONGERING₂₀
FEASIBILITIES₁₈
FEATHERBEDDED₂₄
FEATHERBRAINS₂₁
FEATHEREDGING₂₂
FEATHERHEADED₂₄
FEATHERSTICKS₂₅
FEATHERSTITCH₂₄
FEATHERWEIGHT₂₆
FEBRIFACIENTS₂₃
FEEDINGSTUFFS₂₄
FEELINGNESSES₁₇
FEIGNEDNESSES₁₈
FELDSPATHOIDS₂₃
FELICITATIONS₁₈
FELINOPHOBIAS₂₃
FELLMONGERIES₁₉
FELLMONGERING₂₀
FELLOWSHIPING₂₅
FELLOWSHIPPED₂₇
FELONIOUSNESS₁₆
FEMINISATIONS₁₈
FEMINIZATIONS₂₇
FENCELESSNESS₁₈
FENESTRATIONS₁₆
FENFLURAMINES₂₁
FENNELFLOWERS₂₂
FERMENTATIONS₁₈
FERMENTITIOUS₁₈
FEROCIOUSNESS₁₈
FERRICYANIDES₂₂
FERRICYANOGEN₂₂
FERRIMAGNETIC₂₁
FERROCHROMIUM₂₅
FERROCONCRETE₂₀
FERROCYANIDES₂₂
FERROCYANOGEN₂₂
FERROELECTRIC₂₀
FERROGRAPHIES₂₂
FERROMAGNETIC₂₁
FERROSILICONS₁₈
FERROSOFERRIC₂₁
FERTILENESSES₁₆
FERTILISATION₁₆
FERTILIZATION₂₅
FERVENTNESSES₁₉
FESTIVALGOERS₂₀
FESTIVENESSES₁₉
FESTSCHRIFTEN₂₄
FETISHISATION₁₉
FETISHIZATION₂₈
FEUDALISATION₁₇
FEUDALIZATION₂₆
FEUILLETONISM₁₈
FEUILLETONIST₁₆
FIANCHETTOING₂₂
FIBERGLASSING₂₀
FIBERISATIONS₁₈
FIBERIZATIONS₂₇
FIBREGLASSING₂₀
FIBRILLATIONS₁₈
FIBRINOGENOUS₁₉
FIBRINOLYSINS₂₁
FIBROMYALGIAS₂₄
FIBROSARCOMAS₂₂
FIBROUSNESSES₁₈
FIBROVASCULAR₂₃
FICTIONALISED₁₉
FICTIONALISES₁₈
FICTIONALIZED₂₈
FICTIONALIZER₂₇
FICTIONALIZES₂₇
FICTIONEERING₁₉
FICTIVENESSES₂₁
FIDEICOMMISSA₂₃
FIDGETINESSES₁₈
FIELDSTRIPPED₂₂
FILIBUSTERERS₁₈
FILIBUSTERING₁₉
FILIBUSTERISM₂₀
FILIBUSTEROUS₁₈
FILIOPIETISMS₂₀
FILIPENDULOUS₁₉
FILMOGRAPHIES₂₄
FILTERABILITY₂₁
FINABLENESSES₁₈
FINALISATIONS₁₆
FINALIZATIONS₂₅
FINANCIALISTS₁₈
FINGERBREADTH₂₃
FINGERGLASSES₁₈
FINGERPAINTED₂₀
FINGERPAINTER₁₉
FINGERPICKERS₂₅
FINGERPICKING₂₆
FINGERPRINTED₂₀
FINICALNESSES₁₈
FINICKINESSES₂₂
FIREFIGHTINGS₂₄
FIREPROOFINGS₂₂
FISHABILITIES₂₁
FISSIPARITIES₁₈
FISSIPAROUSLY₂₁
FITTINGNESSES₁₇
FLABBERGASTED₂₂
FLABELLATIONS₁₈
FLACCIDNESSES₂₁
FLAGELLANTISM₁₉
FLAGELLATIONS₁₇
FLAGELLOMANIA₁₉
FLAMBOYANCIES₂₅
FLAMEPROOFERS₂₃
FLAMEPROOFING₂₄
FLAMESTITCHES₂₃
FLAMETHROWERS₂₄
FLAMMULATIONS₂₀
FLANNELBOARDS₁₉
FLANNELGRAPHS₂₂
FLASHFORWARDS₂₆
FLASHMOBBINGS₂₆
FLAUNTINESSES₁₆
FLAVOPROTEINS₂₁
FLAVOPURPURIN₂₃
FLESHLINESSES₁₉
FLEXIBILITIES₂₅
FLEXOGRAPHIES₂₉
FLIGHTINESSES₂₀
FLIGHTSEEINGS₂₁
FLIRTATIOUSLY₁₉
FLOCCILLATION₂₀
FLOCCULATIONS₂₀
FLOCCULENCIES₂₂
FLOODLIGHTING₂₂
FLORICULTURAL₁₈
FLORICULTURES₁₈
FLORISTICALLY₂₁
FLOURISHINGLY₂₃
FLOUTINGSTOCK₂₃
FLOWCHARTINGS₂₅
FLOWERBEARERS₂₁
FLOWERINESSES₁₉
FLOWINGNESSES₂₀
FLOWMETERINGS₂₂
FLUCTUATIONAL₁₈
FLUGELHORNIST₂₀
FLUIDEXTRACTS₂₆
FLUIDISATIONS₁₇
FLUIDIZATIONS₂₆
FLUNITRAZEPAM₂₉
FLUORAPATITES₁₈
FLUORESCEINES₁₈
FLUORESCENCES₂₀
FLUORESCENTLY₂₁
FLUORIDATIONS₁₇
FLUORIMETRIES₁₈
FLUORINATIONS₁₆
FLUOROACETATE₁₈
FLUOROCARBONS₂₀
FLUOROCHROMES₂₃
FLUOROGRAPHIC₂₄
FLUOROMETRIES₁₈
FLUOROSCOPIES₂₀
FLUOROSCOPING₂₁
FLUOROSCOPIST₂₀
FLUOROURACILS₁₈
FLUPHENAZINES₃₀
FLUTTERBOARDS₁₉
FLUVIOGLACIAL₂₂
FOCALISATIONS₁₈
FOCALIZATIONS₂₇
FOLKISHNESSES₂₃
FOLLOWERSHIPS₂₄
FONCTIONNAIRE₁₈
FOOLHARDINESS₂₀
FOOLISHNESSES₁₉
FOOTSLOGGINGS₁₉
FOPPISHNESSES₂₃
FORAMINIFERAL₂₁
FORAMINIFERAN₂₁
FORCIBILITIES₂₀
FOREBODEMENTS₂₁
FORECARRIAGES₁₉
FORECHECKINGS₂₈
FOREFEELINGLY₂₃
FOREGATHERING₂₁
FOREGROUNDING₁₉
FOREIGNNESSES₁₇
FOREJUDGEMENT₂₇
FOREJUDGMENTS₂₇
FOREKNOWINGLY₂₇
FOREKNOWLEDGE₂₅
FOREMENTIONED₁₉
FORENSICALITY₂₁
FOREORDAINING₁₈
FORESHADOWERS₂₃
FORESHADOWING₂₄
FORESHORTENED₂₀
FORESIGHTEDLY₂₄
FORESIGHTLESS₂₀
FORESIGNIFIED₂₁
FORESIGNIFIES₂₀
FORESTALLINGS₁₇
FORESTALLMENT₁₈
FORESTALMENTS₁₈
FORESTAYSAILS₁₉
FORETOKENINGS₂₁
FORETRIANGLES₁₇
FOREVERNESSES₁₉
FOREWARNINGLY₂₃
FORGETFULNESS₂₀
FORGIVENESSES₂₀
FORGIVINGNESS₂₁
FORGOTTENNESS₁₇
FORLORNNESSES₁₆
FORMABILITIES₂₀
FORMALDEHYDES₂₆
FORMALISATION₁₈
FORMALIZATION₂₇
FORMATIVENESS₂₁
FORMIDABILITY₂₄
FORMULAICALLY₂₃
FORMULARISERS₁₈
FORMULARISING₁₉
FORMULARISTIC₂₀
FORMULARIZERS₂₇
FORMULARIZING₂₈
FORTEPIANISTS₁₈
FORTIFICATION₂₁
FORTISSISSIMO₁₈
FORTITUDINOUS₁₇
FORTNIGHTLIES₂₀
FORTUNATENESS₁₆
FORTUNETELLER₁₆
FORWARDNESSES₂₀
FOSSILIFEROUS₁₉
FOSSILISATION₁₆
FOSSILIZATION₂₅
FOUNDATIONARY₂₀
FOUNDATIONERS₁₇
FOUNTAINHEADS₂₀
FRACTIONALISE₁₈
FRACTIONALISM₂₀
FRACTIONALIST₁₈
FRACTIONALIZE₂₇
FRACTIONATING₁₉
FRACTIONATION₁₈
FRACTIONATORS₁₈
FRACTIONISING₁₉
FRACTIONIZING₂₈
FRACTIOUSNESS₁₈
FRACTOCUMULUS₂₂
FRACTOSTRATUS₁₈
FRAGILENESSES₁₇
FRAGMENTARILY₂₂
FRAGMENTATING₂₀
FRAGMENTATION₁₉
FRAGMENTISING₂₀
FRAGMENTIZING₂₉
FRANCHISEMENT₂₃
FRANCISATIONS₁₈
FRANCIZATIONS₂₇
FRANCOPHILIAS₂₃
FRANCOPHOBIAS₂₅
FRANCOPHONIES₂₃
FRANGIBLENESS₁₉
FRANKALMOIGNS₂₃
FRANKINCENSES₂₂
FRANTICNESSES₁₈
FRATERNALISMS₁₈
FRAUDULENCIES₁₉
FREEBOOTERIES₁₈
FREEHEARTEDLY₂₃
FREEMASONRIES₁₈
FREETHINKINGS₂₄
FREEWHEELINGS₂₃
FREQUENTATION₂₅
FREQUENTATIVE₂₈
FRESHMANSHIPS₂₆
FRETFULNESSES₁₉
FRIABLENESSES₁₈
FRIGHTENINGLY₂₄
FRIGHTFULNESS₂₃
FRINGILLIFORM₂₂
FRIVOLOUSNESS₁₉
FRIZZLINESSES₃₄
FRONDESCENCES₂₁
FRONTBENCHERS₂₃
FRONTCOURTMAN₂₀
FRONTCOURTMEN₂₀
FRONTISPIECED₂₁
FRONTISPIECES₂₀
FRONTOGENESES₁₇
FRONTOGENESIS₁₇
FRONTOGENETIC₁₉
FRONTRUNNINGS₁₇
FROWARDNESSES₂₀
FROWSTINESSES₁₉
FRUCTUOUSNESS₁₈
FRUITARIANISM₁₈
FRUITLESSNESS₁₆
FRUMENTACEOUS₂₀
FRUMENTARIOUS₁₈
FRUMENTATIONS₁₈
FRUSTRATINGLY₂₀
FUGACIOUSNESS₁₉
FULSOMENESSES₁₈
FUNAMBULATING₂₁
FUNAMBULATION₂₀
FUNAMBULATORS₂₀
FUNAMBULATORY₂₃
FUNCTIONALISM₂₀
FUNCTIONALIST₁₈
FUNCTIONALITY₂₁
FUNCTIONARIES₁₈
FUNCTIONATING₁₉
FUNDAMENTALLY₂₂
FUNGIBILITIES₁₉
FURACIOUSNESS₁₈
FURAZOLIDONES₂₆
FURIOUSNESSES₁₆
FURSHLUGGINER₂₁
FURTIVENESSES₁₉
FUSIBLENESSES₁₈
FUSTILLIRIANS₁₆
FUTILITARIANS₁₆
FUTUROLOGICAL₁₉
FUTUROLOGISTS₁₇

Letters by positionIn 60% of these words the 13th letter is S.

3rd letter

R24%
A16%
U11%

8th letter

N20%
A16%
L8%

9th letter

E20%
I15%
T12%

11th letter

I30%
S16%
E12%

12th letter

E32%
N18%
S10%

13th letter

S60%
G8%
Y8%

Highest-scoring words

Scrabble and Words With Friends points, before board bonuses

Score spreadMost of these words score 18 in Scrabble; FRIZZLINESSES tops the list with 34. Scores before board bonuses.

1616 points: 18 words
17 points: 18 words
1818 points: 72 words
19 points: 46 words
2020 points: 52 words
21 points: 42 words
2222 points: 28 words
23 points: 31 words
2424 points: 18 words
25 points: 14 words
2626 points: 11 words
27 points: 15 words
2828 points: 7 words
29 points: 3 words
3030 points: 1 words
31 points: 0 words
3232 points: 0 words
33 points: 0 words
3434 points: 1 words

Word	Scrabble	Words With Friends	Dictionaries
FRIZZLINESSES	34	36	Collins only
FLUPHENAZINES	30	34	All three
FLUNITRAZEPAM	29	34	Collins only
FLEXOGRAPHIES	29	31	All three
FRAGMENTIZING	29	34	All three
FICTIONALIZED	28	31	All three
FAMILIARIZING	28	32	All three
FETISHIZATION	28	28	Collins · NWL
FREQUENTATIVE	28	31	All three
FORMULARIZING	28	33	All three
FRACTIONIZING	28	32	Collins only
FORECHECKINGS	28	31	NWL only

F supplies 377 entries at thirteen letters, but everyday vocabulary thins sharply: only 3 qualify among the top 25,000 English words by frequency. The range runs from fundamentally and functionality to flabbergasted and featherweight. Endings are especially lopsided, so a known final letter can narrow your search quickly.

The F list at a glance

The full set contains 377 words recognized by at least one tournament dictionary.
Only 3 entries rank among the top 25,000 English words by frequency.
S is the leading final letter, appearing at the end of 228 words.
Frizzlinesses tops the score list at 34 points.

Which 13-letter words starting with F are familiar?

Fundamentally, functionality, and forgetfulness are readable examples with recognizable parts. The full set is much broader: fossiliferous and ferromagnetic are specialist terms, while fertilization and fertilisation show two spellings represented among the entries.

Dictionary coverage varies: the source counts are 353 in Collins, 243 in NWL2023, and 206 in ENABLE. Those totals overlap rather than forming separate piles. With only 3 entries classed as common, many matches are unlikely to come to mind unaided; check your game's word list before relying on an unfamiliar form.

How should you narrow 13-letter words starting with F?

Start with the last letter when your clue gives one. S finishes 228 entries, far more than any other ending; G, Y, and N follow with 30, 29, and 27. That imbalance makes an ending clue a strong filter, especially when the beginning and length are already fixed.

For a high tile score, look beyond the familiar vocabulary: frizzlinesses scores 34, fluphenazines scores 30, and flunitrazepam scores 29. Frizzlinesses is the clear leader here, but its unusual spelling makes it a risky choice unless you know your game's dictionary accepts it. Familiarity and score do not always travel together.

Below the leaders, five more entries settle at 28 points, so the gap to the top is narrow.

Questions people ask

How many 13-letter words start with F?

There are 377 13-letter words starting with F in the tournament-dictionary pool. The set includes familiar forms such as functionality and forgetfulness, alongside specialist entries such as fossiliferous. Only 3 fall among the top 25,000 English words by frequency, so many are obscure.

What is the highest-scoring 13-letter F word?

Frizzlinesses is the highest-scoring entry, at 34 points. Fluphenazines follows at 30, then flunitrazepam at 29. The leader is an uncommon word, so confirm it appears in your game's dictionary before building a play around it.

What letter do most 13-letter F words end with?

S is the most common ending, with 228 words in the set. G comes next with 30, followed by Y with 29 and N with 27. If your clue gives a final letter, starting with S is the strongest first filter.

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