These words are from the IELTS 4000 Academic Word List and the sample sentences are taken from Cambridge free online dictionary.
affirm: (verb) assert; confirm
She
affirmed her
intention to apply for the post.
affirmation: (noun) positive
assertion; confirmation; solemn pledge by one who refuses to take an oath
We
welcome
the government's affirmation of its
intention
to act.
affirmative: (adjective)
confirmative; ratifying; giving assent or approval; confirming
He
gave me an affirmative reply.
afford: pay;
provide; have the financial means for; bear the cost of
I
don't know
how he can afford a new car on his salary.
affordable: (adjective ) not expensive / able to pay for
The
newly opened store is selling their goods with very affordable prices.
agency: (noun) a business that serves other
businesses; an administrative unit of government
He
has an advertising agency.
agent: (noun) one
that acts on behalf of other persons or organizations
Please
contact our agent in the main branch for further
information.
aggravate:
(verb)
worsen; make worse or more troublesome
Attempts
to restrict parking in the city centre have further aggravated the problem
of traffic congestion.
aggregate: (adjective
) gather into a mass, sum, or whole; amount to
The
seven companies have an aggregate turnover
of £5.2 million.
aggregation: (noun) several
things grouped together or considered as a whole
A
galaxy is an aggregation of stars.
aggressive:
(adjective)
making assaults; unjustly attacking;
combative; hostile; tending to spread quickly
Men
tend
to be more aggressive than women.
aggressor: (noun) one that engages in aggression; person
who first attacks
He
sued his aggressor for physical injury
agitate: (verb) cause
to move with violence or sudden force; upset; disturb
I
didn't
want to agitate her by telling her the truth.
agitation: (noun) anxiety;
extreme emotional disturbance
He
arrived home in a state
of agitation.
agony: (noun) extreme pain of mind or body; anguish;
last struggle of life; death struggle
We've
both suffered agonies of guilt
over what
happened.
agreeable: (adjective) ready to consent or submit;
acceptable
We
need to find
a compromise that is agreeable to both sides of the party.
agreement: (noun) state of agreeing; harmony of opinion,
statement, action, or character
The
dispute was settled by an agreement that satisfied both sides.
agriculture: (noun) practice of cultivating the land or
raising stock
Agriculture is still largely
based
on traditional
methods
in some countries.
aid: (noun) person
or thing that promotes or helps in something done; helper; assistant
Emergency
aid was sent to the flood victims.
ailment: (noun) sickness;
illness; affliction
You
can treat minor
ailments yourself.
aim: (noun) point
or direct towards an object or spot with the intent of hitting it
The
aim of the movie was to make people laugh.
air: (verb) to
say your opinions / be broadcast on
television or radio
The
meeting will give us all a chance to air our views
aircraft: (noun) vehicle
that can fly, such as an airplane, helicopter, balloon
He
is an expert of flying an aircraft.
aisle: (noun) passageway
between rows of seats, as in an auditorium or an airplane; wing of a building
The
beautiful bride is walking down the aisle.
ajar: (adjective)
half-open; slightly turned or opened
Don’t
leave the door of my car ajar!
alert: (noun)warning
serves; alarm; condition of heightened watchfulness or preparation for action
There
was a bomb alert in the city yesterday.
alien: (noun) dissimilar,
inconsistent, or opposed in nature; very different place, society, or person
There
has been sighting of aliens in the past years.
alienate: (verb) cause
to become unfriendly or hostile; transfer property or ownership; isolate or
dissociate emotionally
Disagreements
can alienate teenagers from their families.
alike: (adjective)
similar; in the same manner or to the same degree
My
dad and I look alike.
alliance: (noun) state
of being allied; act of allying or uniting; a union or connection of interests
between families, states, parties
NATO is
sometimes called the Atlantic Alliance.
allocate: (verb) assign;
distribute according to plan
The
government
is allocating £10 million for health
education.
allot: (verb) parcel
out in parts or portions; distribute to each individual concerned; assign as a
share or lot
They
allotted a separate desk to everyone.
ally: (noun) confederate;
partner; collaborator
The
United States is an ally of Saudi Arabia.
alone: (adjective)
solitary; by oneself
I
don’t like being alone.
alongside: (adverb) along or by the side; side by side
with
A
car pulled up alongside ours.
Sources: http://www.examworld.com