THESAURUS
apocalyptic, augural, auguring, augury, boding, divinatory, fatidic, forecasting, forerunning, foreseeing, foreshadowing, foreshowing, foretelling, foretokening, forewarning, fortunetelling, haruspical, heavy with meaning, indicative, intuitive, mantic, meaningful, monitory, omen, oracular, portent, precursive, precursory, predictional, predictive, predictory, prefigurative, prefiguring, preindicative, premonitory, presage, presageful, presaging, presignificative, presignifying, prognosticative, prophetic, sibyllic, sibylline, significant, vaticinal, vaticinatory, warning, weather-wise
ROGET THESAURUS
Omen
N
omen, portent, presage,
prognostic, augury, auspice, sign, harbinger, yule candle, bird of ill omen, signs of the times, gathering clouds, warning, prefigurement, ill-boding, auspicium melioris aevi.