Damage, harm, or loss: took a long leave of absence without detriment to her career. See Synonyms at disadvantage.
Something that causes damage, harm, or loss: Smoking is now considered a detriment to good health.
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.