Portent

(n.) That which portends, especially that which portends evil; a sign of coming calamity; an omen; a sign.

Thesaurus Entries

adumbration, advance notice, augury, auspice, balefulness, banefulness, betokening, betokenment, bodefulness, boding, direness, doomfulness, fatality, fatefulness, foreboding, foreshadow, foreshadowing, foreshowing, foretoken, foretokening, forewarning, indicant, indication, marvel, meaning, miracle, omen, ominousness, phenomenon, plenty of notice, portentousness, precautioning, prefiguration, preindication, premonition, premonitory shiver, premonitory sign, premonitory symptom, prenotice, prenotification, presage, presagefulness, presentiment, presignifying, prewarning, prodigy, prognostic, prognostication, promise, sensation, shadow, sign, significance, sinisterness, soothsay, stunner, suggestiveness, token, tokening, type