eyeopener

[ ahy-oh-puh-ner ]
/ ˈaɪˌoʊ pə nər /

noun

an experience or disclosure that gives one a sudden realization or understanding: Her disclosures about her childhood were a real eyeopener.
a drink of liquor taken early in the day and intended to wake a person up fully.

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Origin of eyeopener

An Americanism dating back to 1810–20; eye + opener
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for eyeopener

British Dictionary definitions for eyeopener

eye-opener

noun informal

something startling or revealing
US and Canadian an alcoholic drink taken early in the morning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012