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9-Letter Words Starting with FI

For puzzles requiring FI prefixes, here are all 9-letter word options. Popular examples include FIBERFILL, FIBERIZED, FIBERIZES, plus FIBRANNES, FIBREFILL, FIBRILLAE and many more. Click any word for its full definition and usage.

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149 words

Word	Length	Syllables
fiberfill	9	3
fiberized	9	4
fiberizes	9	4
fibrannes	9	3
fibrefill	9	3
fibrillae	9	2
fibrillar	9	3
fibrinoid	9	3
fibromata	9	4
fictional	9	3
fictively	9	4
fideistic	9	3
fidgeters	9	3
fidgeting	9	3
fiduciary	9	4
fieldfare	9	2
fieldwork	9	2
fieriness	9	3
fifteenth	9	2
fiftieths	9	2
figeaters	9	3
fightings	9	2
figulines	9	4
figurants	9	3
figurines	9	4
filagreed	9	3
filagrees	9	3
filaments	9	3
filariids	9	3
filatures	9	4
filiating	9	3
filiation	9	3
filicides	9	4
filigreed	9	3
filigrees	9	3
filisters	9	3
filleting	9	3
filliping	9	3
filmcards	9	2
filmgoers	9	2
filminess	9	3
filmlands	9	2
filmmaker	9	3
filmstrip	9	2
filterers	9	3
filtering	9	3
filthiest	9	2
filtrable	9	2
filtrated	9	3
filtrates	9	3
fimbriate	9	2
finaglers	9	3
finagling	9	3
finalised	9	4
finalises	9	4
finalisms	9	3
finalists	9	3
finalized	9	4
finalizes	9	4
financial	9	3
financier	9	3
financing	9	3
finessing	9	3
finfishes	9	3
fingerers	9	3
fingering	9	3
fingertip	9	3
finically	9	4
finickier	9	3
finicking	9	3
finishers	9	3
finishing	9	3
finitudes	9	4
finnmarks	9	2
finochios	9	3
fioritura	9	4
fioriture	9	3
firebacks	9	3
fireballs	9	3
firebases	9	4
firebirds	9	3
fireboats	9	3
firebombs	9	3
fireboxes	9	4
firebrand	9	3
firebrats	9	3
firebreak	9	3
firebrick	9	3
fireclays	9	3
firedamps	9	3
firedrake	9	3
firefangs	9	3
firefight	9	3
fireflies	9	3
fireguard	9	3
firehalls	9	3
firehouse	9	3
firelight	9	3
firelocks	9	3
firemanic	9	4
firepinks	9	3
fireplace	9	3
fireplugs	9	3
firepower	9	4
fireproof	9	3
firerooms	9	3
firesides	9	4
firestone	9	3
firestorm	9	3
firethorn	9	3
firetraps	9	3
firewater	9	4
fireweeds	9	3
firewoods	9	3
fireworks	9	3
fireworms	9	3
firmament	9	3
firmwares	9	3
firstborn	9	2
firsthand	9	2
firstling	9	2
fishbolts	9	2
fishbones	9	3
fishbowls	9	2
fisheries	9	3
fisherman	9	3
fishermen	9	3
fishhooks	9	2
fishlines	9	3
fishmeals	9	2
fishplate	9	2
fishpoles	9	3
fishponds	9	2
fishtails	9	2
fishwives	9	3
fishworms	9	2
fissility	9	4
fissional	9	3
fissioned	9	3
fissipeds	9	3
fissuring	9	3
fistfight	9	2
fistnotes	9	3
fistulous	9	3
fitnesses	9	3
fittingly	9	3
fixations	9	3
fixatives	9	4
fixedness	9	3

FAQs

Are FI-starting words common?
FI is a frequent start; probing vowel swaps after FI quickly narrows options.

Is this list good for crosswords?
Yes—filter by length mentally and scan definitions when available.