What does eyeopener mean?
An eyeopener is something that startles a person into a new or fuller awareness — a revelation so striking it feels as though one's eyes have literally been opened. The word typically refers to a fact, experience, or discovery that overturns prior assumptions: a documentary might be an eyeopener about an industry's practices, or a first visit abroad might be an eyeopener about how differently other people live. It carries a connotation of sudden enlightenment, sometimes tinged with shock or discomfort, and it belongs chiefly to informal speech and writing, where variants such as "eye-opener" and "eye opener" are equally common. Historically, the term had a more literal sense too: by the late eighteenth century it named a strong alcoholic drink taken in the morning, on the notion that it opened the eyes of the drinker. That usage survives mainly as a historical curiosity, while the figurative sense of a startling revelation remains current and useful in everyday English.
A surprising or enlightening fact, experience, or disclosure that makes someone newly aware of something.
"Her first week teaching in a rural school was a real eyeopener."
Often intensified as "a real eyeopener" or "quite an eyeopener"; frequently hyphenated as "eye-opener."
Informal, dated: an alcoholic drink consumed early in the morning to wake oneself up.
"In the old boardinghouse, the men took an eyeopener of whiskey before breakfast."
This sense is chiefly historical or humorous today.
Also commonly spelled "eye-openers" or "eye openers." The plural is used for multiple revelations or, historically, multiple morning drinks.
"The audit turned up several eyeopeners that management had overlooked."
The same word that describes a life-changing realization has, for centuries, also described the morning shot of alcohol people once drank to 'open their eyes.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of eyeopener
Eyeopener is a straightforward English compound of "eye" and "opener," formed from the verb "open," which derives from Old English "openian." The literal sense of something (or someone) that opens the eyes dates from around the seventeenth century, while the figurative sense of a startling revelation developed soon after. By the late eighteenth century the word also denoted a morning alcoholic drink, a sense recorded in American and British slang before falling out of common use.
How eyeopener is actually used
The word is informal and often written with a hyphen as "eye-opener," though solid and open forms all appear in print. The drinking sense is dated and now chiefly historical or humorous.
Easily confused with eyeopener
"Eye-opening" is the adjective form describing something that reveals or surprises, while "eyeopener" is the noun naming the surprising thing or revelation itself.