portent (n.)
- adumbration
- augury
- auspice
- balefulness
- boding
- fatality
- foreboding
- foreshadowing
- foretoken
- forewarning
- indicant
- indication
- marvel
- meaning
- miracle
- omen
- ominousness
- phenomenon
- prefiguration
- preindication
- premonition
- presage
- presentiment
- prodigy
- prognostic
- prognostication
- promise
- sensation
- shadow
- sign
- significance
- stunner
- token
- type