Check words you know to measure your vocabulary size (number of word families).
fellow
pound
proper
sport
fool
branch
limit
rot
retain
decline
manual
pepper
stance
preach
volcano
bride
drape
ration
vow
dazzle
patio
limousine
wane
overhear
sluggish
terrestrial
rabbi
unix
leaded
tarmac
banal
mesmerise
stimulant
blemish
renegade
nexus
gloat
dishonour
beguile
whop
telepathy
dovetail
depopulate
mayan
contraband
indolent
leprosy
overvalue
talcum
tabby
pseudo
mantis
carnitine
drivel
raster
nanotube
upbraid
vapid
bioremediation
typological
polysaccharide
rancorous
palaver
puce
dogfish
myosin
meatus
docudrama
samosa
potshot
effing
filaria
jeune
dentine
campari
socialiste
openwork
carborundum
bonheur
murre
festschrift
hauberk
strongroom
inseam
quare
schlemiel
benison
bioscope
acidotic
qigong
derecho
ephor
wintle
lactam
toponym
catawba
monomial
debute
giller