Check words you know to measure your vocabulary size (number of word families).
thirteen
enough
several
stage
wrap
silver
drag
fairy
essential
glow
thorough
interact
waiter
rattle
scrape
whiskey
candy
deed
drastic
causal
chimpanzee
incise
solicit
banish
stratify
thug
photon
infamous
esquire
primal
collage
enigmatic
prospecting
ancillary
cackle
ovation
reassemble
buzzard
hrer
pummel
thresh
microchip
outpace
muslin
trilobite
equine
sorrel
talisman
chloroform
morrow
coif
coolie
riposte
cinque
coxswain
osteoarthritis
divot
pommel
bilge
pintail
cline
remaster
poseur
desperado
gofer
thermoplastic
unilinear
troth
matchplay
purine
liposome
potsherd
parsec
alar
wildcard
ecoregion
quoin
saurian
rhombus
illite
consistory
portacabin
butterflyfish
loden
neurofibromatosis
homeobox
apochromatic
destrier
brunet
posada
chaconne
digestif
osculate
aneurin
oleograph
lade
encephalon
ablaut
sext
barratry