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Unit 1
stamp
abroad
absence
access
accord
across
act
address
administer
advance
against
agreeable
air
alien
alive
amount
anchor
announce
anonymous
answer
appreciate
army
article
asset
associate
assume
attach
attitude
audience
avenue
able
ability
disable
enable
unable
absorb
absorbent
absorbing
absorbed
absorption
abundant
abundance
abound
redundant
accident
incident
accidental
accidentally
incidental
incidentally
incidence
coincide
coincidence
coincidental
acquaint
acquaintance
act
action
active
activate
activity
transact
transaction
action
interact
interaction
interactive
react
reaction
reactor
act
actor
actress
actual
actually
actuality
exact
agency
agent
agenda
agitate
adapt
adopt
apt
aptitude
opt
option
optional
optimum
optimism
optimist
optimistic
add
addition
additional
additive
address
addresser/-or
addressee
admire
admirable
admiration
advance
advancement
advance
advanced
advantage
disadvantage
advantageous
disadvantageous
adventure
adventurer
adventurous
venture
advice
advise
advisable
advisory
agriculture
agronomy
acre
cultivate
culture
cultural
multicultural
air
airline
airway
aircraft
airplane
aerial
aeroplane
aerospace
aeronautics
allow
allowance
ally
alliance
allied
alloy
rally
alter
alternate
alternative
alternately
alternatively
alien
alienate
adulterate
adulteration
ambulance
ambition
ambitious
ambassador
embassy
ambiguous
ambiguity
among(st)
mingle
mix
mixture
ample
amplify
amplification
amplifier
analyse
analysis
analyst
analytic(al)
analytically
paralyse
ancient
ancestor
ancestral
ancestry
anterior
anticipate
anticipation
antique
angle
triangle
rectangle
triangular
rectangular
ankle
anchor
animal
animate
animated
unanimous
appear
appearance
apparent
disappear
transparent
apply
appliance
application
applicant
applicable
applied
approach
approximate
approximately
arc
arcade
arch
army
arm
disarm
armament
alarm
arrange
arrangement
range
rank
art
artist
artistic
artful
artificial
artifice
craft
crafty
handicraft
aircraft
spacecraft
assist
consist
consistent
consistency
inconsistency
exist
subsist
existence
subsistence
coexistence
insist
persist
persistence
persistent
resist
resistance
resistant
resistor
transistor
astonish
stun
amaze
amazing
atmosphere
atmospheric
sphere
hemisphere
atom
atomic
anatomy
attack
tack
attach
attachment
detach
attend
attendance
attention
attentive
attendant
August
inaugurate
augment
auction
author
authority
authoritative
authorize
authentic
authenticity
auto
automatic
automation
automobile
autonomy
autonomous
avenge
revenge
vengeance
avoid
avoidance
void
devoid
back
background
backup
backward
ball
balloon
ballot
belly
bullet
ball
ballet
bank
banker
banknote
bankrupt
bankruptcy
bar
barbecue
barricade
barrier
barrel
embarrass
bare
barely
base
basis
basic
basically
basement
bear
born
inborn
airborne
birth
birthright
forbear
unbearable
bearing
beat
bat
battalion
battery
battle
combat
debate
because
cause
accuse
accusation
excuse
before
fore
former
first
foremost
forefather
forefinger
foregoing
forehead
forerunner
forecast
foresee
foretell
forth
forthcoming
henceforth
forward
straightforward
behind
hind
hinder
hindrance
abandon
abdomen
abide
abolish
absurd
academic
academician
academy
acrobat
acute
adjacent
adore
aesthetic
affiliate
afford
affordable
agony
aid
aim
aisle
album
alcohol
ale
alert
alphabet
alphabetic(al)
altitude
ammunition
anecdote
angel
anguish
annoy
annoyance
antenna
apparatus
appeal
appealing
appetite
arbitrary
arena
array
arrogance
arrogant
artery
articulate
artillery
assassin
assassinate
assassination
atlas
attain
attitude
auxiliary
aviation
await
awe
awkward
ax(e)
axis