| gong(warning, bell, siren) |
| high sign(expression, warning, bell, siren) |
| horn(alert, warning, bell, siren) |
| nod(warning, bell, siren) |
| notice(caution, caveat) |
| scramble(warning, bell, siren) |
| shout(warning, bell, siren) |
| sign(noun, notice, alert, caution, signal) |
| signaling device(expression, warning, bell, siren) |
| siren(alert, warning, bell) |
| squeal(warning, bell, siren) |
| tip off(expression, warning, bell, siren) |
| tocsin(warning, bell, siren) |
| token(noun, sign, notice, alert, caution) |
| trumpet(warning, bell, siren) |
| warning(notice, alert, caution, bell, siren) |
| whistle(alert, warning, bell, siren) |
| word of warning(expression, idiom, notice, caution, caveat) |
| word to wise |
| yell(warning, bell, siren) |