Check words you know to measure your vocabulary size (number of word families).
money
promise
tail
continue
skill
circumstance
teenage
gay
ache
universe
molecule
powder
stripe
fuse
pursuit
federate
hurl
pierce
frantic
dentist
hose
dent
oracle
pigment
resin
photon
tendon
blunder
afore
punt
obstetrics
underscore
axiom
dispossess
fictitious
kiln
overdrive
locust
libido
sentinel
harrier
platonic
unabashed
canto
slob
marquess
opus
mutt
intubate
coddle
umber
alsatian
serif
parakeet
incorrigible
marionette
phrenology
bursar
funereal
naff
moderne
muzak
numismatic
creel
goitre
mafioso
pentameter
patisserie
argent
campanula
aspartate
abstemious
scrimshaw
hereof
tyrannosaur
amanuensis
shiraz
abracadabra
booger
meningioma
polychromatic
incan
markka
stradivarius
piker
menorrhagia
bibelot
chanticleer
chital
bioscope
quadruplicate
varlet
helianthemum
dominie
bearwood
arris
metanoia
methuselah
troms
chrisma