Check words you know to measure your vocabulary size (number of word families).
this
catch
choose
form
challenge
bark
sore
community
funeral
palm
grateful
acre
subjective
stuffed
lyric
rifle
sacks
bleak
segregate
monastery
multitude
annex
attic
stature
contraceptive
governance
inseparable
basque
flagging
pertain
scoot
eschew
insurrection
despot
rejuvenate
nettle
negotiable
particulate
afoot
submissive
embolden
python
anachronistic
condor
quince
sprightly
wherewithal
cipher
maxima
coolie
amputee
feta
positron
hackneyed
crestfallen
cravat
putsch
uni
inveigh
caudal
ptarmigan
apologia
barmy
virology
wigwam
gazan
maquette
allometric
nicker
autofocus
neap
regicide
caboose
icky
seraphim
ankh
dropsy
anencephalic
cantus
juste
gymkhana
serape
hyperfine
nihil
fellate
bibelot
babu
atemporal
yester
oyer
whinchat
monaural
gowan
farceur
eluant
clerisy
endodontic
grunion
millenary
hydropath