Check words you know to measure your vocabulary size (number of word families).
quick
own
reach
lovely
percent
violent
bare
approach
glow
expert
psychology
magnet
flock
norm
array
integrity
disintegrate
sulphur
reel
guild
martial
sherry
intolerable
knob
mainframe
craze
rna
kindle
histology
prognosis
automotive
ballistic
thistle
adrenaline
scorpion
roach
queasy
millisecond
wanton
vinaigrette
evangelise
vendetta
sulphate
uptown
crockery
purview
eschatology
polypropylene
beefed
rayon
courtesan
oestrogen
hashemite
intron
taxidermy
drivel
commodious
eurobond
dumpster
febrile
colectomy
cheroot
nutcase
bridgehead
cel
monozygotic
rial
zaibatsu
audiogram
pellucid
macrobiotic
blancmange
etre
applejack
duckweed
dharma
flic
fortis
extralinguistic
tallboy
doxy
whimbrel
carabiner
manque
autoexec
lobectomy
dumbass
makeweight
touchpaper
boulle
strigil
mediant
eugenol
dibber
sanatoria
momzer
phloem
cullis
euthenics
debute