old hat
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old hat
adj.
1. Behind the times; out of fashion: Last year's styles are old hat.
2. Trite from overuse; overly familiar: That prank is old hat.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
old hat
adj
(postpositive) old-fashioned or trite
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
old′ hat′
adj.
1. old-fashioned; dated.
2. trite; hackneyed.
[1745]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
old hat
Old-fashioned, behind the times, or having been used too often.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited