Check words you know to measure your vocabulary size (number of word families).
notice
price
key
business
saint
cap
prime
remark
peasant
fade
premise
urge
spike
pond
postpone
fond
transparent
tablet
arc
expire
picket
warranty
distrust
disconnect
gravely
nostalgic
conscientious
tyranny
outpost
clover
baggy
stretcher
nape
sauna
whir
antelope
botch
nacional
lien
dour
geezer
nihilism
anti
entrap
blinker
javelin
acolyte
splint
slapstick
pituitary
compunction
neuroscience
riddance
quadrangle
petrel
recherche
cine
endothelium
cygnet
isometric
thallium
boyar
unidimensional
smorgasbord
hosanna
piezoelectric
downhearted
gastronomy
powwow
counterpose
numerate
agitprop
paterfamilias
quire
trebuchet
vagotomy
clangour
hemangioma
myasthenia
birefringence
corries
inconnu
loupe
osteosarcoma
atman
crake
cooee
jerrican
berceuse
metaleptic
mochi
enceinte
crepey
silicium
jnana
swail
asafetida
terce
aestivate
charry