Taking immediate advantage, often unethically, of any circumstance of possible benefit.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "opportunistic" in a sentence
"She said her client was ashamed of the act, which he described as "opportunistic.""
"ZAHN: David, let's come back to this opportunist, what you called opportunistic intelligence that led to this strike last night."
"Prime Minister Stephen Harper and his ministers have repeatedly said they won't spark what they call an "opportunistic" election."