Check words you know to measure your vocabulary size (number of word families).
ashamed
ear
double
further
junior
biscuit
october
commit
category
bishop
request
nuclear
stimulus
flaw
rod
herb
sensor
undergraduate
compartment
extinct
peanut
warranty
loaf
banish
pictorial
disconcert
modulate
watershed
envisage
aperture
revamp
invertebrate
dermatology
malnutrition
turbo
bluster
decked
omega
circumspect
repulsive
mahdi
megahertz
slurp
endocrine
khat
inimical
vestry
molasses
frontispiece
humbug
academe
lacrosse
amniotic
osteoarthritis
abraded
buxom
ungulate
sward
iridium
ballistics
inbuilt
gaucho
gunk
gramps
griffon
spritzer
wunderkind
meta
rosicrucian
penology
spinney
genovese
rebus
decoct
instituto
gosling
conodont
cantus
swazi
rima
circumstellar
ketoacidosis
ciabatta
portacabin
ileus
microcassette
kanban
manky
whipper
daimon
althea
patrilateral
kino
otoscope
ninon
metical
pandit
apologue
capriole
bohrium