broad, general, overall
basic, central, fundamental
chief, first, key, main, major, overriding, primary, prime (BrE), principal
sole
His sole aim in life is to enjoy himself.

clear, explicit, specific
It is important to have a clear aim in view.

ambitious
high, noble, worthy (esp. BrE)
Simple truth must be the highest aim of any real investigation.

limited, modest
legitimate
common
I want to see a strong and united country in which people work together with common aims.

immediate, initial
original
eventual, ultimate
His ultimate aim was to force the chairman to resign.

long-term, short-term
avowed, declared, express, expressed, stated
The express aim of the treaty is to keep the whole region free from nuclear weapons.

war
policy, political, strategic

have
set (yourself)
accomplish, achieve, fulfil/fulfill
You will have to work hard to achieve your aim.

further, pursue
They were intent on furthering their aims.
The country is still pursuing its aim of joining the EU.

with the aim of
She started the organization with the aim of helping local people.

aims and objectives
What are the aims and objectives of this visit?

careful, direct, steady
I'll take more careful aim next time.

poor
His aim was poor and he missed the target.

take
adjust

aim at
He took aim at the target and fired.

at
She's aiming at a scholarship this year.

for
He is aiming for a win in this race.

aim high (= to attempt to achieve a lot)
a young man who is prepared to aim high

clearly, directly, squarely
deliberately
largely, mainly, mostly, primarily, principally
particularly, specifically
solely

be aimed at
educational courses aimed particularly at older people

directly, straight
carefully, deliberately

at
She aimed the gun straight at the intruder.

for
Aim for his legs, not his body.

Aim is used with these nouns as the object:
arrow, blow, bow, camera, cannon, gun, kick, laser, missile, pistol, revolver, rifle, shot, shotgun, weapon