| foretoken(noun, sign, notice, alert, hint) |
| forewarning(noun, sign, notice, alert, caution) |
| guidance(noun, sign, notice, alert, hint) |
| handwriting on wall(noun, expression, idiom, sign, notice) |
| heads up(noun, expression, sign, notice, alert) |
| hint(noun, information, sign, notice, alert) |
| 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, sign, notice, alert) |
| notification(noun, sign, notice, alert, hint) |
| portent(noun, sign, notice, alert, hint) |
| prediction(noun, sign, notice, alert, hint) |
| presage(noun, sign, notice, alert, hint) |
| recommendation(noun, sign, notice, alert, hint) |
| signal(noun, sign, notice, alert, caution) |
| signaling |
| suggestion(noun, sign, notice, alert, hint) |