1. (n.) An occurrence supposed to portend, or show the character of, some future event; any indication or action regarded as a foreshowing; a foreboding; a presage; an augury.

2. (v. t.) To divine or to foreshow by signs or portents; to have omens or premonitions regarding; to predict; to augur; as, to omen ill of an enterprise.

actuarial prediction adumbrate adumbration apocalypse augur augury auspicate auspice betoken betokening betokenment bode boding danger sign early symptom falling barometer forebode foreboding forecast forecasting foreshadow foreshadowing foreshow foreshowing foresight foretelling foretoken foretokening forewarning gathering clouds guesswork harbinger have a hunch have an intimation high sign improbability indicant indication portend portent precursor predict prediction prefiguration prefigurement prefiguring preindication preliminary sign premonition premonitory shiver premonitory sign premonitory symptom presage presaging presentiment preshowing presignifying probability prodroma prodrome prognosis prognostic prognostication promise prophecy prophesying prospectus quarantine flag red flag red light shadow shadow forth sign skull and crossbones soothsay speculation statistical prediction storm petrel stormy petrel symptom thundercloud thunderhead token tokening type vaticination warning sign warning signal yellow flag yellow jack