Check words you know to measure your vocabulary size (number of word families).
cup
stage
summer
pay
tongue
southern
project
supply
sigh
diplomat
academy
device
theft
fog
mighty
sphere
antibody
roam
gown
prudent
hoist
churn
conjure
hull
contrive
trudge
hallmark
repatriate
exhale
rotary
pheasant
thermometer
waffle
subterranean
stash
pursed
epsilon
outdo
inkling
fortuitous
unkempt
slush
acuity
plenary
thereabouts
tailback
anorak
perpetuity
pudgy
truncheon
phosphorescent
antisemitism
floret
spay
caldera
superscalar
anthropic
repartee
bairn
camisole
elute
astigmatic
tourney
kopek
trice
rorschach
prokaryote
industrie
quetzal
spurge
electroencephalogram
ipa
vocative
mouser
couvade
impetigo
escarole
megafauna
nanostructure
riband
catecholamine
salesian
mucilage
butterflyfish
heuchera
festal
bellflower
isolette
grillade
gadzooks
helter
oriflamme
stirk
decagon
barathea
metamaterial
cartouch
ligroin
phototropism
manihot