Opportunist

Tom's a money-grubbing opportunist.

Is he an opportunist?

If the Algerians succeed in overthrowing the politico-military mafia, it's to install another opportunist politico-religious mafia. Just more of the same!

Tom is an opportunist.

You're just a sleazy opportunist.

He's just an opportunist.

He's an opportunist.

You're an opportunist.

James Milner's angled free-kick was headed on to the post by the tireless Bent and Lampard the opportunist was perfectly placed to stoop and head in from virtually on the goal-line.