wake-up call
Meaning
An event or realization that shocks someone into paying attention and taking action (a warning or reality check).
Origin
From the literal “wake-up call” (a phone call to wake hotel guests). By the mid–late 20th century it broadened metaphorically to mean a jarring reminder to become alert or change behavior.
Notes
Usually metaphorical: a strong warning or reality check that prompts change. Often used for negative events (bad results, accidents), but can be neutral if it spurs improvement.
Examples
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Missing the deadline was a real wake-up call—I need to manage my time better.
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The doctor's warning about his blood pressure served as a wake-up call.
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Getting lost in a familiar neighborhood was a wake-up call about how distracted I'd become.
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The company’s sudden drop in sales was a wake-up call to improve customer support.
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Her first bad review was a wake-up call that she couldn’t rely on talent alone.
Grammar & Usage Notes
Typically used as a noun phrase: “a wake-up call” or “the wake-up call.” Common patterns: “be a wake-up call for (someone)” / “serve as a wake-up call” / “a wake-up call to do (something).” Hyphen often kept when used attributively (e.g., “a wake-up-call moment”).
Synonyms
- reality check
- warning
- shock
- jolt
- eye-opener
Antonyms
- false alarm
- all clear