Check words you know to measure your vocabulary size (number of word families).
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water
rise
mile
retire
inspect
ruin
magic
resolution
clinic
vast
pad
ideological
prop
clutch
cafe
wilderness
temporal
tread
fragrant
payroll
secrete
commonplace
luggage
extravagance
midwife
tempo
transgress
nicotine
outreach
realign
sinus
bailiff
rescind
superfluous
canonical
impedance
prosthesis
sleaze
topaz
tangerine
pathos
colloquial
revue
saboteur
felicity
axon
cellophane
temerity
droll
postscript
loggerhead
wraith
tenderloin
hillbilly
infield
shew
pulitzer
phrenology
koala
gastropod
porting
antebellum
maquiladora
colostrum
disrobe
whitsun
cholinergic
vasodilatation
cannelloni
metazoa
animatronic
doggone
cholo
micromanage
poplin
weepie
archaism
swazi
kundalini
reis
musicale
brevet
multisensory
encephalomyelitis
waddy
amma
faff
marly
switcheroo
shiso
allogeneic
eglantine
ngultrum
cachepot
anamorphic
bathyscaph
dogger
anglophobe
omphalos