Synonyms of omen in English:

omen


See US English definition of omen

See UK English definition of omen

noun

1‘the ferocious storm began on our wedding day: perhaps it was an omen of things to come’

SYNONYMS
portent, sign, signal, token, forewarning, warning, foreshadowing, prediction, forecast, prophecy, harbinger, augury
straw in the wind, writing on the wall, indication, hint, auspice, presage, threat, ill omen, menace
literary foretoken