old hat
adjective
old-fashioned; dated.
trite from having long been used or known.
Origin of old hat
First recorded in 1745–55
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
old hat
adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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old hat
The New Dictionary of Cultural Literacy, Third Edition
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