omen

An omen is an event or happening that you take as sign of something to come. It’s believed to be a bad omen if a black cat crosses your path or if it rains on your wedding day.

Omens generally get a bad rap — that's probably because a lot of them predict bad stuff, at least according to superstition. But the interpretation of omens really depends on the country and culture. What's considered an ominous sign in one place might mean a lifetime of good luck somewhere else. Oscar Wilde once wrote that, “There is no such thing as an omen. Destiny does not send us heralds. She is too wise or too cruel for that.”

Definitions of omen
1

n a sign of something about to happen

“he looked for an omen before going into battle”
Synonyms:
portent, presage, prodigy, prognostic, prognostication
Types:
auspice
a favorable omen
foreboding
an unfavorable omen
death knell
an omen of death or destruction
Type of:
augury, foretoken, preindication, sign
an event that is experienced as indicating important things to come

v indicate by signs

Synonyms:
augur, auspicate, betoken, bode, forecast, foreshadow, foretell, portend, predict, prefigure, presage, prognosticate
Types:
threaten
to be a menacing indication of something:"The clouds threaten rain"
foreshow
foretell by divine inspiration
Type of:
bespeak, betoken, indicate, point, signal
be a signal for or a symptom of

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