sinister
//ˈsɪnɪstə(r)//
Adjective
sinisterCanonical form
1
Giving the impression that something harmful or evil is happening or will happen; threatening or ominous.
There was something sinister about the abandoned house at the end of the street.
2
Evil or morally wrong; wicked.
The villain had sinister intentions that threatened the entire village.
3
(Heraldry) Of or on the left side of a shield (from the bearer's point of view).
The lion is placed on the sinister side of the coat of arms.