ADJ

big, considerable, enormous, great, huge, overwhelming
clear, decided/decisive, definite, distinct, material, obvious, positive, real
Breastfeeding offers a clear advantage to your baby
key, main, major, important, significant
dubious
unfair
The company has an unfair advantage over its competitors
added, additional
These computers have the added advantage of being cheap
special
potential
comparative, relative
mutual
The plan would be to our mutual advantage
natural
the natural advantages of countries with low labour costs
commercial, competitive, economic, educational, electoral, financial, military, personal, political, practical, psychological, social, strategic, tactical, technical, technological
cost, price, speed, tax

VERB + ADVANTAGE

have
gain, get
He would gain considerable advantage from staying in that job
bring (sb), give sb, offer (sb)
Another qualification would give me a big advantage at job interviews
press home
The commanders were keen to press home their advantage with a further offensive in the north
outweigh
They argue that the possible risks attached to such vaccines vastly outweigh any advantages

PREP

to sb's ~
It is to your advantage to delay things for as long as possible
~ in
There may be some advantage in laying down a clearer procedure
~ over
East coast resorts have the advantage over west coast ones
~ to
the advantage to both countries of closer economic ties

PHRASES

to good advantage, to sb/sth's best advantage
The bright lighting showed the jewels to their best advantage

ADJ

full, maximum
We took full advantage of the hotel facilities