Idioms and Phrases with odds are, the
odds are, the
The chances are, as in The odds are that they'll serve turkey for Thanksgiving. Replacing it is odds by the late 1600s, this phrase refers to betting.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.