Check words you know to measure your vocabulary size (number of word families).
telephone
clean
figure
skin
toast
pet
inch
series
scatter
suburb
respond
accompany
thread
grief
judicial
stadium
cocktail
pivot
pastoral
quantify
heroine
apostle
rugged
galley
destabilize
downright
resin
quarterback
maroon
tarmac
moot
perpendicular
microbiology
interject
yon
stead
chardonnay
demob
integer
waterlogged
offhand
prong
diuretic
riffle
gauche
pittance
desultory
apse
faux
lithosphere
rad
toboggan
yucca
nervy
nubian
rood
mosey
jink
midden
outwith
pater
quanta
courgette
goitre
mafioso
adagio
shiatsu
weathervane
decathlete
granola
regicide
contrail
bonito
expatiate
barfly
tyr
uniformitarian
trey
siliceous
plastique
vender
noh
uvula
ataman
aphelion
technophile
siamang
nomogram
fluconazole
whinchat
physiatrist
derringer
afebrile
triolet
cremains
betatron
chyle
hausen