Single word for taking advantage of the situation?

Question

What is that word that is used to say someone "takes advantage of the situation". This word usually has a mildly negative connotation. It is related to being clever.

Answer 1

The word closest to that definition is probably opportunist, although historically it has been used in a rather specialised sense.

Answer 2

Cunning, which according to OED means:

1 having or showing skill in achieving one's ends by deceit or evasion: a cunning look came into his eyes.

Answer 3

I feel that the word most closely associated with taking advantage of a situation is exploit which also carries a slightly negative connotation.

Answer 4

Have you considered Exploitative?

exploiting or tending to exploit; especially : unfairly or cynically using another person or group for profit or advantage
"exploitative terms of employment"
"an exploitative film"

Merriam-Webster has its first-known use as 1885.

Answer 5

There is also hustler and wheeler dealer

hustler, wheeler dealer : a shrewd or unscrupulous person who knows how to circumvent difficulties

Answer 6

For a word with less negative connotations, I would suggest the word astute.

Here's the definition from oxforddictionaries.com:

having or showing an ability to accurately assess situations or people and turn this to one’s advantage: an astute businessman