Part of speech:
The definition of sinister is a person or thing that threatens harm or misfortune.
That warns; serving to warn
Portentous means self-important.
Of or serving as an omen; esp., having the character of an evil omen; threatening; sinister
Giving or serving as a warning; admonitory:
Find another word for monitory. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for monitory, like: sinister, warning, portentous, ominous, admonishing, admonitory, cautionary, warn and exemplary.