Portentous /(?)/
Por·tent·ous
Portentous
a.
-
Of the nature of a portent; containing portents; foreshadowing, esp. foreshadowing ill; ominous.
For, I believe, they are portentous things.
Victories of strange and almost portentous splendor.
- Hence: Monstrous; prodigious; wonderful; dreadful; as, a beast of portentous size.