Warning sign
Meaning
An indication or signal that something negative, dangerous, or undesirable is likely to occur.
Origin
From the earliest days, humanity has been wired to spot "warning signs." Before there were written words or traffic lights, our ancestors relied on keen observation: the sudden silence in the forest before a predator, the unusual cloud formation signaling a coming storm, the shifting earth hinting at an earthquake. These weren't just observations; they were vital cues, the difference between life and death. As societies grew, so did the need for explicit signals. Early travelers might have marked dangerous paths, and ancient mariners watched for particular wave patterns. The phrase itself, though a relatively modern descriptive compound, echoes this deep-seated, primal human instinct to recognize and respond to precursors of danger, transforming subtle hints into actionable intelligence.
Examples
- The sudden drop in sales was a clear warning sign that the new marketing strategy was failing.
- Ignoring the early warning signs of mechanical trouble can lead to much more serious problems down the line.