| alarm(noun, sign, guide, alert, signal) | |
| alarum(noun, alarm, banzai) | |
| high sign(noun, expression, alert, warning) | |
| alert | |
| red light(noun, signal) | |
| siren | |
| Mayday(noun, alert, alarm, flare) | |
| SOS(noun, alert, alarm, flare, Mayday) | |
| flare(noun, sign, guide, alert, signal) | |
| foreboding | |
| foretoken | |
| gathering clouds | |
| menace | |
| notice to mariners(noun, alert, alarm, flare, Mayday) | |
| signal(noun, sign, alert, alarm, flare) | |
| signal of distress(noun, alert, alarm, flare, Mayday) | |
| skull and crossbones(expression, idiom) | |
| stormy petrel | |
| symptom | |
| threat |
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Warning_signal on
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| APA | Smart Define. (2015). warning signal thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/warning_signal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "warning signal thesaurus" https://smartdefine.org/warning_signal/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, warning signal thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/warning_signal/thesaurus/synonyms>. |
| MLA | Smart Define. "warning signal thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/warning_signal/thesaurus/synonyms> |