Likely to be a hindrance; disadvantageous: unfavorable winds. (adjective)
Having or showing opposition; adverse: an unfavorable reaction to our proposal. (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 "unfavorable" in a sentence
"The Ukrainian government has blamed former Prime Minister Yulia Tymoshenko for striking what it calls an unfavorable deal in January 2009 to end a natural gas cut-off."
"Yes, this new thinking goes, these bad genes can create dysfunction in unfavorable contexts — but they can also enhance function in favorable contexts."
"July 24th, 2009 10: 47 am ET unfavorable is putting it mildly! she is EVERYTHING that is WRONG in our nation, and anyone who would favor her needs to wake up!"