Check words you know to measure your vocabulary size (number of word families).
lovely
worry
never
teach
direction
firm
smash
november
manipulate
episode
thrill
conclusion
harmony
thread
fatal
barn
zip
balcony
perfume
cellular
plateau
snipe
wither
nourish
noun
plaza
undercut
mast
predetermine
hangar
raisin
fetus
proletariat
skewer
kiln
belch
unanimity
astrophysics
sans
entwine
thermos
doodle
bushel
tetanus
savanna
cinch
palisade
bagel
apogee
pudgy
transom
immunodeficiency
homophone
individuate
workaday
biff
thwack
eviscerate
audiology
nomenklatura
synchronic
spume
cisplatin
bedsit
pensione
premiss
dewater
pupate
mitral
goldfinch
laryngoscope
screwy
extrasensory
inspiral
bundesrat
banns
buprenorphine
multigenerational
grackle
swizzle
weskit
teasel
limnology
tercet
meticais
psephology
spica
amma
gobstopper
gainst
podzol
quartic
fila
kouprey
dominium
eugenol
muliebrity
ectotherm
carolus
hassium