An opportunist is someone who takes advantage of any opportunity to further their own interests. A carpetbagger (12 letters) is someone who moves into a new area in order to take advantage of opportunities for personal gain. A TRIMMER (7 letters) is someone who changes their opinions or beliefs to suit the situation. A USER (4 letters) is someone who takes advantage of others for their own benefit. A selfseeker (10 letters) is someone who pursues their own interests without regard for others. A timeserver (10 letters) is someone who adjusts their behavior to suit the current situation. Finally, a johnnyonthespot (15 letters) is someone who is always ready to take advantage of an opportunity.