Check words you know to measure your vocabulary size (number of word families).
go
ashamed
order
have
staff
male
cap
constant
practitioner
treasure
amend
enthusiastic
riot
wan
physician
bubble
rite
proprietor
salvation
muse
polymer
rustle
skim
sewer
transgress
disconcert
detonate
wrath
registrar
lacquer
puss
countenance
holler
cackle
exponential
tiller
assuage
giraffe
liqueur
ayatollah
carat
tau
vegan
quotient
gantry
duc
rabble
overeat
feta
midshipman
chianti
barrack
essentialism
monad
skittle
phlox
sinusitis
detox
depolarize
cyan
paramour
superoxide
tink
chitchat
ingenue
televangelist
bellwether
flocculate
quetzal
bioscience
formes
equerries
appetit
durian
gigot
merseysider
cockade
foreland
centime
astrocytes
dentate
agapanthus
stegosaur
brilliantine
pianism
budworm
ceefax
babu
chicle
gazump
witan
dashiki
phreatic
lobate
jebel
neuk
epode
jaconet
alane
hamadryad