Check words you know to measure your vocabulary size (number of word families).
sister
every
clock
shout
nerve
metre
pat
divide
emphasise
debate
emit
album
insulate
flush
documentary
dictionary
dread
witch
squat
manor
lurch
humanities
emphatic
rouge
unnerve
inexorable
bingo
muddle
brash
resound
permissible
pervade
abbot
piecemeal
clang
poplar
musk
trundle
oesophagus
bayonet
lithium
evangelise
thence
aqueduct
beseech
aphorism
caked
tyrannical
bankroll
egged
fumigate
legionnaire
lemur
kingpin
jamboree
newsagent
bellhop
rheumatology
chronometer
blimey
moderne
argot
obscurantism
tsetse
scrim
chronotope
pentagram
kiloton
consanguinity
lobule
cul
slaw
deglaze
orthosis
impiety
barrette
methylmercury
supernormal
turpitude
edelweiss
micrometeorite
amplexus
pixelated
anomala
altazimuth
hellion
radula
faff
blenny
bobtail
servomechanism
varicella
milksop
capellini
alcazar
dashi
entrechat
ectotherm
detumesce
causerie