Check words you know to measure your vocabulary size (number of word families).
ago
bone
winter
base
industry
extreme
pronounce
storm
flee
frequent
sculpt
slope
constituency
telescope
devil
brew
substantive
outright
tranquil
stepmother
imprint
shroud
scorn
receptive
inseparable
consul
beak
angular
dude
derby
megawatt
surname
tearful
intifada
calamity
artichoke
biomedical
synergy
paediatric
habituate
promiscuity
swelter
bronchitis
airstrip
preposition
deuterium
crowbar
paprika
bicuspid
salacious
dowager
atelier
tutu
whither
certitude
bravura
libertine
mordant
sinusitis
scrimmage
hymen
schtick
zeolite
capo
crepuscular
agouti
pensione
neutron
endocarditis
pompadour
granola
pederast
gelato
belizean
permanganate
behove
axion
kolkhoz
lacustrine
therm
murre
scotoma
roly
cubing
kora
dorsum
pinochle
piastre
biserial
trepan
annatto
turbolift
folliculitis
alcazar
lade
katakana
estop
unco
ofwat
hackamore