Check words you know to measure your vocabulary size (number of word families).
degree
hospital
able
definite
thus
twist
qualify
purple
advocate
moral
administrator
moreover
ego
classify
publicity
hatch
chord
dye
spite
sorrow
vicinity
lurch
irrigate
moth
rupture
shortfall
confound
hive
header
lark
benefactor
abstain
quad
innocuous
convection
lilac
morose
crass
lynch
disincentive
philology
indy
magenta
leech
arboretum
infinitesimal
aneurysm
pharisee
teuton
boudoir
prophylaxis
cognate
astringent
fractionate
igloo
catacomb
dere
anatolian
luddite
perihelion
adenoma
pedometer
anglophile
metastasise
loggia
neurophysiology
beadle
radicchio
teletype
decathlete
redwing
globulin
breadline
stroppy
downmarket
cowpea
fug
caul
capitular
popinjay
pari
nihil
etiolate
costermonger
teratogenic
hibachi
eddoe
dongle
feria
liverwurst
quarterstaff
charlady
enzootic
dysthymia
alcazar
panky
kwashiorkor
manihot
gesundheit
chowchow