| Mayday(noun, information, sign, notice, alert) |
| SOS(noun, information, sign, notice, alert) |
| admonition(noun, information, sign, notice, alert) |
| advice(noun, sign, notice, alert, hint) |
| alarm(noun, information, sign, notice, alert) |
| alert(noun, information, sign, notice, caution) |
| augury(noun, sign, notice, alert, hint) |
| distress signal(noun, expression, sign, notice, alert) |
| exhortation(noun, sign, notice, alert, hint) |
| fore(noun, sign, notice, alert, hint) |
| foretoken(noun, information, sign, notice, alert) |
| guidance(noun, sign, notice, alert, hint) |
| handwriting on wall(noun, expression, idiom, information, sign) |
| heads up(noun, expression, information, sign, notice) |
| indication(noun, sign, notice, alert, hint) |
| information(noun, sign, notice, alert, hint) |
| injunction(noun, sign, notice, alert, hint) |
| intimation(noun, sign, notice, alert, hint) |
| lesson(noun, sign, notice, alert, hint) |
| look out(noun, expression, information, sign, notice) |