| omen(noun, feeling, sign, indication, hunch) |
| writing on the wall(feeling, sign, hunch, premonition, presentiment) |
| indication(noun, feeling, sign, indication, hunch) |
| portent(noun, feeling, sign, indication, hunch) |
| sign(noun, feeling, indication, hunch, premonition) |
| augury(feeling, sign, hunch, premonition, presentiment) |
| foreboding(feeling, sign, hunch, premonition, presentiment) |
| foretoken(feeling, sign, hunch, premonition, presentiment) |
| presage(feeling, sign, hunch, premonition, presentiment) |
| prognostic(feeling, sign, hunch, premonition, presentiment) |
| prognostication(feeling, sign, hunch, premonition, presentiment) |
| warning(feeling, sign, hunch, premonition, presentiment) |
| damning evidence |
| harbinger(noun, indication) |
| indicator(noun, indication) |
| sign of the times(noun, indication) |
| slight hint(noun, indication) |
| smoking gun(noun, evidence) |