Unit 1
celebrity
counsel
demonstrate
drowsy
essential
hardship
haul
humble
pledge
sincere
stampede
suitable

Unit 2
annual
basic
competition
contract
dismiss
neglect
obtain
portion
recall
sponsor
stern
vacant

Unit 3
attractive
burden
consent
dependable
indicate
previous
qualify
response
shabby
thaw
urgent
vanity

Unit 4
ambush
calculate
contribute
dread
employ
extend
frantic
initial
routine
stun
sturdy
yield

Unit 5
antique
baggage
digest
establish
eternal
haste
humid
lash
oppose
pioneer
sensible
worthy

Unit 6
blossom
collide
constant
content
distract
drought
foul
noble
policy
quiver
slight
tidy