Informal Outrageous: took unholy risks to win the downhill race. (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 "unholy" in a sentence
"Makes for what I call the unholy trinity of Mammon which teaches that we are not our brother's keeper."
"The joy is in unholy worship of a fetish, the pain that there is no joy also deference to a fetish."
"Daniel refused to participate in unholy things in his country and the king was so moved by him that he declared that only the one true God would be served."