Check words you know to measure your vocabulary size (number of word families).
rabbit
few
mountain
fire
flag
unite
plate
intent
ideology
fade
assembly
gesture
pillow
viable
earl
secular
anguish
bail
ambiguity
expel
walnut
brim
deform
turmoil
throng
tenor
wooded
drawl
captivate
domesticate
orator
intrusive
purvey
enterprising
porridge
revulsion
suckle
nacional
percolate
plumb
decommission
trestle
skitter
calligraphy
psych
phylum
scree
rapturous
gird
turmeric
prophylaxis
humdrum
perambulate
hoodlum
potpourri
alveolar
unipolar
hydroponic
triennial
sigmoid
chequered
zidovudine
lettre
monopole
pentathlon
dosh
purser
stratigraphical
multipoint
cosh
razzmatazz
madrasa
osier
couvade
tabla
anole
apiary
incus
murrelet
straitlaced
bally
gratia
ichor
acta
countervail
ichthyology
casque
stollen
ethnobotanical
biowarfare
bris
panoptic
dotard
cyprinid
larrikin
capellini
charybdis
galvanometric
collop
corvee