Check words you know to measure your vocabulary size (number of word families).
worth
empty
stick
term
warn
cart
pipe
skirt
eliminate
route
dialogue
assembly
capitalist
divine
lace
opt
cock
mattress
revenge
covenant
mentor
ambush
pre
corrode
inverse
vampire
emerald
overlay
spectra
fervour
amalgamate
plush
atone
prawn
wimp
grub
weasel
ransack
valet
posterity
heinous
cologne
somatic
rhinoceros
savanna
discomfit
lactose
clod
epidermis
internecine
guppy
gaffer
bruiser
ergo
stooge
thereupon
nautilus
miniscule
anon
halfback
naturopathy
counterpane
amal
bouffant
travertine
forint
mandamus
pes
cannonade
quetzal
shortcake
thingamajig
spinet
lederhosen
neuropsychiatry
ploidy
chapeau
rima
chiastic
mamluk
centrefold
kenotic
caravanserai
bewigged
cryptanalyst
costive
coving
plyometrics
crimplene
gweilo
pulchritude
fenestra
highers
ostiomeatal
sousaphone
richen
nictate
baldric
concupiscent