The plotting of the evil woman was sinister.
Sinister--suggesting evil or trouble her sinister smile showed people she didn't have good intentions
Her sinister eyes glared at him from across the room.
The witch had her minions carry out the sinister plot to murder the royal family.
Here are some sentences.The sinister magician turned the prince into a frog.His sinister plans were thwarted by the superhero.
The fugitive's plan was sinister. The sinister plan was too shocking to repeat.
Sinister actually means left, as in the left side. The modern meaning of "evil" comes from the old belief that the left side was the "wrong" side (as opposed to the right side). Here are some sentences using both meanings.Use these drops in the sinister eye for three weeks to cure your infection.The scientist's lab was sinister looking.Dexter means right and sinister means left.
The villain displayed a sinister grin, then left the stage.
1. threatening or portending evil, harm, or trouble; ominous: a sinister remark. 2. bad, evil, base, or wicked; fell: his sinister purposes. 3. unfortunate; disastrous; unfavorable: a sinister accident. 4. of or on the left side; left. Source: Dictionary.com
Many sinister occurrences befell the weary travelers as they made their challenging way through the darkness to the sorcerer's domain.
The king kept the scepter out of his sinister greed.
In my opinion, to maltreat children is a sinister sin.
I would use it correctly in a sentence, of course. Thank you for asking.