the mind > mental capacity > expectation > foresight, foreknowledge > prediction, foretelling > an omen, sign, portent > [adverb] > in a portentous manner, ominously (6)
Portentously; in the manner of an omen. Obsolete.
In a gloomy, ominous, or sinister way; in a threatening way.
Prodigiously, extraordinarily. Now rare.
In an inauspicious manner; with presage of evil.