Level 21: Level 21
Level 21
1000 base
651 derived
Base words
abaft
abbacy
- abbacies
ablative
abortifacient
abri
abscissa
- abscissae
- abscissas
acetabulum
- acetabula
- acetabular
- acetabulums
achromat
- achromatic
acrostic
- acrostical
- acrostically
- acrostics
acta
acyclic
adjure
- adjured
- adjures
- adjuring
aerofoil
- aerofoils
aerogel
affiance
- affianced
- affiances
- affiancing
agapanthus
aggiornamento
aggress
- aggressed
agon
akkadian
alcalde
allosaurus
amah
- amahs
amide
- amides
ammoniac
- ammoniacal
amnio
amplexus
amyl
amyotrophic
ancho
andiron
- andirons
ane
anime
annelid
- annelidan
annus
anomala
anser
- ansers
anteroposterior
antiphon
- antiphony
antiphonal
anzac
- anzacs
aposematic
appendicectomy
- appendicectomies
apraxia
archiepiscopal
- archiepiscopally
arcuate
- arcuately
argosy
- argosies
aril
- arils
armiger
- armigeral
- armigerous
arras
artemisia
arteriovenous
arthroplasty
ascitic
ashlar
askari
assiduity
asterism
- asterisms
astrakhan
astrobiologist
- astrobiologists
- astrobiology
atlatl
- atlatls
autocephalous
avascular
awn
- awns
axilla
babbitt
bacteremia
bahai
- bahaism
balalaika
- balalaikas
bally
barded
- barding
barista
- baristas
basilar
bateau
bechamel
beezer
befoul
- befouled
bejeezus
- bejesus
belive
benzine
benzoyl
besom
- besoms
bespatter
- bespattered
- bespattering
- bespatters
betake
- betaken
- betakes
- betook
bewhiskered
bildungsroman
- bildungsromans
bilharzia
- bilharzial
binoc
- binocs
biocide
- biocides
biopsychosocial
biosafety
blackamoor
- blackamoors
blastula
blazon
- blazonry
blench
- blenched
- blenches
- blenching
blotto
bluebonnet
- bluebonnets
bluestocking
- bluestockings
bluestone
bodacious
bodge
- bodged
- bodger
- bodges
- bodging
bodhran
- bodhrans
bodkin
- bodkins
boffo
bonita
boonies
botrytis
boucle
brachial
brae
- braes
brane
- branes
brevet
- brevets
brigantine
- brigantines
brilliantine
- brilliantined
broadloom
brogan
- brogans
brougham
- broughams
bruit
- bruited
buckboard
- buckboards
bucko
- buckos
bulla
bungy
- bungey
- bungies
bunkum
burb
- burbs
bursitis
butterflyfish
butyric
caber
- cabers
cagoule
- cagoules
caique
- caiques
calomel
calvados
cancan
cancerian
- cancerians
candlewick
canzone
caput
carabiner
- carabiners
caravanserai
- caravanserais
- caravanseries
caravel
- caravels
carbamazepine
carny
carpel
- carpels
carrack
- carracks
cassia
catalepsy
- catalepsies
- cataleptic
- cataleptically
catalpa
- catalpas
catecholamine
catsup
celiac
centrefold
- centrefolds
centrum
- centra
ceramide
- ceramides
chainmail
cham
chancer
- chancers
chancre
- chancrous
chaplet
- chaplets
chaque
chargehand
- chargehands
chasse
chasuble
- chasubles
chatline
- chatlines
chaw
- chawed
- chawing
- chaws
chia
chironomid
- chironomids
chloral
chockablock
chokecherry
- chokecherries
cholla
chrism
chromate
chromide
- chromides
chromite
chromogen
- chromogenic
chunnel
chunter
- chuntered
- chunterer
- chunterers
- chuntering
- chunters
ciabatta
cigarillo
- cigarillos
cineplex
cineraria
- cinerarias
circumflex
- circumflexes
circumstellar
cist
- cists
clachan
clitoridectomy
- clitoridectomies
cloisonne
clonidine
clostridium
- clostridia
coagulant
- coagulants
coalfish
coble
- cobles
coccus
- coccal
- cocci
coccyx
- coccyxes
cochineal
cockatiel
- cockateel
- cockateels
- cockatiels
codswallop
coeval
cohosh
coiffeur
- coiffeurs
- coiffured
cojones
collagenase
colossi
combi
commensal
commissionaire
- commissionaires
communicational
compendious
- compendiously
- compendiousness
conation
- conative
concertacion
confabulate
- confabulated
- confabulates
- confabulating
- confabulation
- confabulations
- confabulatory
confrere
- confreres
congeries
consanguineous
consistory
consol
- consols
contes
conventicle
- conventicles
convolvulus
cootie
- cooties
copula
- copular
- copulas
cordovan
coreopsis
corkage
corncrake
- corncrakes
corrida
- corridas
corries
coster
- costers
costermonger
- costermongering
- costermongers
costumier
- costumiers
cottonmouth
- cottonmouths
coulomb
- coulombs
craniofacial
crape
croix
cryptogam
- cryptogamic
- cryptogamous
cubing
culex
cumber
- cumbered
- cumbering
- cumbers
cumbrous
- cumbrously
- cumbrousness
curtilage
dall
damar
damselfish
datura
dayglo
debe
debone
- deboned
- debones
- deboning
decedent
- decedents
decolletage
decoupage
defang
- defanged
- defanging
- defangs
dehisce
- dehiscence
- dehiscent
delegitimation
- delegitimization
delict
- delicts
delouse
- deloused
- delouses
- delousing
deltic
- deltics
demitasse
dentate
dentil
- dentils
deployable
despond
- desponded
- desponding
- desponds
desuetude
detinue
deuteronomy
dewlap
- dewlapped
- dewlaps
dextran
dextrous
diacritic
- diacritical
- diacritics
dialyse
- dialysed
diamine
dianthus
dibble
- dibbled
- dibbles
- dibbling
dipolar
disa
- disas
disjoin
- disjoined
- disjoining
- disjoins
divertimento
- divertimenti
divisor
- divisors
dizygotic
doit
domic
- domical
doohickey
- doohickeys
doolally
dosa
- dosas
doublespeak
douce
doux
doxology
doxy
- doxie
- doxies
dragoman
- dragomans
- dragomen
dramaturgy
dreamboat
dreidel
- dreidels
druthers
dugong
- dugongs
dukery
- dukeries
dumbwaiter
- dumbwaiters
dural
durst
dysphonia
dyspnea
earsplitting
effluence
- effluences
elastoplast
electroconvulsion
- electroconvulsions
- electroconvulsive
electromyography
electronica
electrum
elephantiasis
- elephantiases
elevenses
eluate
- eluates
embayment
- embayments
emic
emissivity
- emissivities
emmet
- emmets
empanel
- empaneled
- empanelled
encaustic
endo
endosperm
enduro
enfilade
- enfiladed
- enfilades
- enfilading
entendre
entendres
entrepot
- entrepots
envoi
- envois
ephemeris
epiglottis
epigon
- epigone
- epigones
- epigonism
- epigonous
- epigons
epizootic
- epizootics
ergot
- ergotic
ern
escherichia
ethnocultural
etic
etiolate
- etiolated
- etiolates
- etiolating
- etiolation
euophony
- euphonious
- euphoniously
euphorbia
- euphorbiaceae
- euphorbs
excimer
exiguous
- exiguously
- exiguousness
exotoxin
- exotoxins
extravasate
- extravasated
- extravasates
- extravasating
- extravasation
extremis
exurb
- exurbs
fakir
- fakirs
falafel
farsi
fasciitis
fashionista
- fashionistas
fastback
fatso
feoff
- feoffees
ferrite
festschrift
- festschriften
- festschrifts
fiche
- fiches
fiddlesticks
filles
finca
- fincas
fissiparous
- fissiparously
- fissiparousness
flextime
flub
- flubs
foetid
foin
fontina
footsie
forfend
- forfended
- forfending
- forfends
formic
friesan
- friesians
frogmarch
- frogmarched
- frogmarches
- frogmarching
fugal
furze
fusilier
- fusileers
- fusiliers
futz
- futzed
- futzing
gabbro
- gabbroic
- gabbros
gaberdine
gadolinium
gadwall
- gadwalls
galactose
galumph
- galumphed
- galumphing
- galumphs
galvanometer
- galvanometers
gammy
gaskin
- gaskins
gastroesophageal
gastronome
- gastronomes
gaucherie
- gaucheries
gelignite
genette
genii
geodetic
geometrics
germicide
- germicidal
- germicides
gimbal
- gimbals
gingersnap
- gingersnaps
glycoside
- glycosides
gnomon
- gnomonic
golliwog
- golliwogs
graben
grama
grampus
- grampuses
gramscian
grana
granita
grapeshot
gratia
grav
gravid
gravimetric
- gravimetrically
grosbeak
- grosbeaks
grot
- grots
grotesquerie
- grotesqueries
groundling
- groundlings
grupo
gruppo
gryphon
- gryphons
guanaco
- guanacos
guid
gumdrop
- gumdrops
gunge
gunnysack
- gunnysacks
gurkha
- gurkhas
gymkhana
- gymkhanas
gymnosperm
- gymnosperms
gyrfalcon
- gyrfalcons
haematite
haloperidol
hamamelis
hardbound
hauberk
- hauberks
hautboy
- hautbois
- hautboys
hayseed
- hayseeds
heigh
heliocentric
- heliocentrism
hellacious
hemiplegia
hemodialysis
hemodynamic
hepatoma
hepatotoxicity
herstory
- herstories
heterocyclic
hinny
- hinnies
hoedown
holodeck
- holodecks
homograph
- homographs
hosier
- hosiers
hotpoints
- hotpoint
houri
- houris
howdah
- howdahs
hoyden
humeri
hunh
hydrophone
- hydrophones
hydrops
hygroscopic
- hygroscopicity
hyperfine
hyperthermia
hypocalcemia
ichthyology
- ichthyologic
- ichthyological
- ichthyologist
- ichthyologists
icosahedron
idiolect
- idiolectal
- idiolects
ikat
- ikats
illuminati
ilmenite
- ilmenites
imipramine
immunogen
- immunogens
incan
inconnu
incunabulum
- incunabula
indiaman
- indiamen
infotainment
infusoria
inhume
- inhumation
- inhumed
- inhumes
- inhuming
injuria
inoculum
instamatic
ionomer
- ionomers
isinglass
isobar
- isobaric
- isobars
isopropyl
jabot
- jabots
jejune
jeremiad
- jeremiads
jessamine
jiujitsu
- jujitsu
- jujutsu
jurassic
kameez
karat
- karats
karoo
kasha
katydid
- katydids
kedgeree
keloid
- keloids
kendo
kenotic
kente
kep
ketoacidosis
ketone
kielbasa
kike
- kikes
killdeer
kilobase
- kilobases
kilocalorie
- kilocalories
kilohertz
kimchi
kina
kine
- kines
kismet
kitemark
klezmer
knuckleduster
- knuckledusters
koan
- koans
kore
koruna
kouroi
krait
- kraits
krater
- kraters
kuru
kyrie
- kyries
lagrangian
lambada
lanai
lantana
lanthorn
lascar
- lascars
latitudinarian
- latitudinarianism
lavatera
leben
leet
- leets
lempira
- lempiras
lenticular
lepidoptery
- lepidopterist
- lepidopterists
- lepidopterology
leva
levator
lilium
limite
- limites
limnology
linac
- linacs
loblolly
loden
logwood
- logwoods
loquat
- loquats
loti
- lotis
loup
- louping
loupe
luau
- luaus
lumina
luminist
- luminists
luminol
lumpenproletariat
- lumpenproletarian
lune
lunker
- lunkers
luthier
- luthiers
lycee
lycopod
- lycopods
lymphedema
maillot
mako
malediction
- maledictions
- maledictory
malleus
malus
mamluk
manana
manometer
- manometers
manque
manus
maravilla
- maravillas
markka
mastoidectomy
matin
maunder
- maundered
- maundering
- maunders
maximin
meadowlark
- meadowlarks
meccano
meconium
medevac
megaparsec
- megaparsecs
megapixel
- megapixels
melaleuca
mentha
mesic
mesomorph
- mesomorphs
metacarpal
- metacarpals
methylphenidate
micromachine
- micromachines
micrometeorite
- micrometeorites
microswitch
- microswitches
middy
mids
mignonette
milch
milfoil
- milfoils
miliary
minidress
minimax
mirabilis
miri
mirin
miserere
misfeasance
missa
moloch
morphia
mortmain
moshav
motile
moussaka
- mousaka
muchacho
- muchachos
mucilage
multidirectional
multiform
multiplicand
multisensory
multiverse
mun
murre
- murres
musicale
myotonia
- myotonic
myringotomy
myxomatosis
nabob
- nabobs
nacre
- nacred
- nacreous
naevi
naiad
- naiads
naloxone
nanobot
- nanobots
nanogram
- nanograms
nanowire
- nanowires
nappe
- nappes
natatorium
- natatoria
- natatoriums
natron
- natrons
nauplii
neurovascular
neutropenia
neve
newspeak
newtons
niello
- nielloware
nihil
nilgai
nilly
nim
- nims
noh
nonpareil
nostra
nostro
nota
nubbin
- nubbins
nunciature
nystatin
oakum
obloquy
- obloquies
oculist
- oculists
officio
offish
olfaction
ombre
- ombres
oocyst
- oocysts
oompah
ophthalmoscope
- ophthalmoscopic
- ophthalmoscopy
opren
orrery
- orreries
ostensive
- ostensively
osteosarcoma
otalgia
ototoxic
oubliette
- oubliettes
outre
ovule
- ovules
oxalate
- oxalates
pabulum
- pabulums
palfrey
- palfreys
palimony
palmette
- palmettes
palynology
- palynological
- palynologically
- palynologist
- palynologists
panjandrum
- panjandrums
pappy
parapharyngeal
paraquat
parasail
- parasailing
paratha
- parathas
parentis
paresis
pari
parisienne
parle
passerine
passiflora
pastille
- pastilles
payola
peacenik
- peaceniks
peafowl
- peafowls
pelisse
percale
perigee
- perigees
periosteum
peritonsillar
petechiae
- petechia
- petechial
phantasmagora
- phantasmagorical
phishing
phlebitis
phonon
- phonons
photodetector
- photodetectors
photogravure
- photogravures
phragmite
- phragmites
physis
pika
- pikas
pimpernel
- pimpernels
pinger
- pingers
pinko
- pinkoes
- pinkos
pinscher
- pinschers
pitter
- pittered
- pittering
- pitters
pixelated
- pixilated
placeman
- placemen
planchette
- planchettes
planisphere
- planispheres
plano
plasmacytoma
- plasmacytomas
plasmodium
plastique
plink
plumbago
- plumbagos
pneumonic
pollarded
polloi
polyanthus
polychaete
- polychaetes
polychromatic
polycystic
polygenic
- polygene
pomelo
- pomelos
- pummelo
- pummelos
pomfret
- pomfrets
pompon
- pompons
popover
- popovers
poppadom
- poppadoms
- poppadum
- poppadums
portacabin
- portacabins
porterhouse
posole
posset
- possets
preamplifier
- preamplifiers
preeclampsia
prehension
- prehensions
prelapsarian
prepuce
- prepuces
principe
probiotic
procrustean
prograde
- progradation
- prograded
prorogue
- prorogate
- prorogated
- prorogates
- prorogating
- prorogation
- prorogued
- prorogues
- proroguing
protegee
- protegees
- protegée
- protegées
proteomics
protist
- protists
pseudoephedrine
pseudopod
- pseudopods
psilocybin
psychopathological
puja
- pujas
pukka
pulmonologist
- pulmonologists
pyrexia
pyridine
pyroxene
- pyroxenic
- pyroxenoid
qatari
quadraphonic
- quadraphonicly
- quadraphonics
quadrillion
quavery
quenelle
- quenelles
quinquennial
- quinquennially
quisling
- quislings
rabbet
- rabbets
raclette
radiogram
- radiograms
rajah
- rajahs
ranchera
- rancheras
ranunculus
- ranunculi
- ranunculuses
raunch
razzle
rebbe
redbreast
- redbreasts
redd
- redds
redondo
redpoll
- redpolls
reiki
reis
remora
- remoras
revoir
rheology
- rheological
- rheologically
- rheologist
rinderpest
rogered
- rogering
roly
rosacea
rubicund
- rubicundity
rubrum
ruthenium
saccade
- saccades
saddleback
- saddlebacks
sadhu
- sadhus
salariat
salesian
salut
sambal
sangfroid
santolina
- santolinas
sarsaparilla
sassenach
- sassenachs
satrapy
- satrapies
scallywag
- scallywags
scandium
- scandic
schnitzel
- schnitzels
scop
- scopic
- scops
scotoma
- scotomas
scow
- scowed
- scowing
- scows
screwworm
- screwworms
seisin
seismometer
- seismometers
selectman
- selectmen
semiquaver
- semiquavers
sensorial
septuagint
septuplet
- septuplets
serape
- serapes
serous
sexpot
- sexpots
shelduck
shieling
- shielings
shortcrust
shrike
shrive
- shrived
- shriven
- shriving
siderite
- siderites
sigil
- sigils
silene
silverweed
simp
skanky
skedaddle
- skedaddled
- skedaddles
- skedaddling
skeeter
- skeeters
skinful
skycap
- skycaps
soba
socio
sodality
- sodalities
solano
solus
sonicate
- sonicated
- sonicates
- sonicating
sooth
soubriquet
- soubriquets
soutane
- soutanes
spandau
spareribs
spelunker
- spelunkers
- spelunking
sphygmomanometer
- sphygmomanometers
- sphygmomanometry
spiller
- spillers
splenetic
- splenetically
splosh
- sploshed
- sploshes
- sploshing
spondylitis
sporran
- sporrans
sprit
- sprits
sprue
- sprues
squirearchy
- squirarchies
- squirarchy
- squirearchies
stabile
- stabiles
stapedotomy
stegosaur
- stegosaurs
stevia
stonefly
- stoneflies
stoup
- stoups
stradivarius
- stradivarii
strath
streusel
strimmer
- strim
- strimmed
- strimmers
- strimming
- strims
strongroom
- strongrooms
succotash
sulu
sumpter
sunchoke
- sunchokes
sundew
supergrass
- supergrasses
supermajority
superstring
- superstrings
supersymmetry
- supersymmetric
supraglottic
susu
sutler
- sutlers
swains
- swainish
- swainishness
sweetpea
- sweetpeas
switchgrass
sympatric
synchro
synergism
tabard
- tabards
tachograph
- tachographs
tagline
tamponade
tantalum
tantalus
tapenade
taqueria
- taquerias
tarantella
- tarantelle
tarsier
- tarsiers
teasel
- teasels
technologic
telco
- telcos
temblor
- temblors
temporomandibular
tenderfoot
- tenderfeet
tenter
- tenters
tercet
- tercets
termagant
- termagants
terrycloth
terylene
tessitura
thaler
- thalers
thegn
- thegns
thenceforward
thermophilic
thermoregulatory
thiol
- thiols
thrombi
thromboembolism
thrombotic
tickertape
tiddler
- tiddlers
tiddly
tinpot
titer
- titers
titmouse
- titmice
toccata
- toccatas
tocopherol
- tocopherols
tole
tomogram
- tomograms
toms
toreador
- toreadors
torr
- torrs
towhead
- towheaded
- towheads
toxicant
- toxicants
toyboy
- toyboys
transfrontier
trecento
trew
- trews
tricorder
- tricorders
tricot
tricuspid
trifecta
trimaran
- trimarans
tritone
- tritones
trotline
- trotlines
trow
- trows
trug
- trugs
tumbril
- tumbrils
tup
- tupped
- tupping
- tups
turgor
tweeze
- tweezed
- tweezes
- tweezing
tympanoplasty
ubiquinone
- ubiquinones
ultima
ultramontane
- ultramontanism
umbel
- umbels
uppercase
uranyl
usufruct
uvula
vadose
vaginitis
valine
vaporetto
velociraptor
- velociraptors
velodrome
vender
- venders
verruca
- verrucae
- verrucas
vertu
- vertus
viceregal
victoire
vicuna
- vicunas
vinculum
- vincula
- vinculums
vindaloo
- vindaloos
vinifera
vivarium
- vivaria
- vivariums
vivendi
vomica
wallah
- wallahs
wannabee
- wannabees
wapiti
wassail
- wassailed
- wassailing
- wassails
weskit
- weskits
- westernizers
whelm
- whelmed
- whelming
- whelms
whereon
whimbrel
- whimbrels
whippersnapper
- whippersnappers
whoof
- whoofed
- whoofing
- whoofs
wingback
wiseacre
- wiseacres
wurlitzer
- wurlitzers
xanthine
- xanthines
xenolith
- xenoliths
xylem
yardarm
- yardarms
yerba
yonks
zeaxanthin
zinfandel
ziti
- zitis
zoetrope
- zoetropes