All 10 Uses

sinister
in
The Adventures of Sherlock Holmes
(Edited)

In this sinister way I came into my inheritance.
Chpt 5 *

sinister = evil, harmful, or frightening
Then there are successive entries that A and B cleared, or left the country, and finally that C was visited, with, I fear, a sinister result for C. Well, I think, Doctor, that we may let some light into this dark place, and I believe that the only chance young Openshaw has in the meantime is to do what I have told him.
Chpt 5
Now for the sinister cripple who lives upon the second floor of the opium den, and who was certainly the last human being whose eyes rested upon Neville St. Clair.
Chpt 6
In spite of its youth, it has already a sinister history.
Chpt 7
It seems to me to be a most dark and sinister business.
Chpt 8
Dark enough and sinister enough.
Chpt 8
To me at least there was a strange contrast between the sweet promise of the spring and this sinister quest upon which we were engaged.
Chpt 8
And Holmes' fears came to be realised, for from that day to this no word has ever been heard either of the beautiful woman, the sinister German, or the morose Englishman.
Chpt 9
As I stood in the passage gazing at the sinister door and wondering what secret it might veil, I suddenly heard the sound of steps within the room and saw a shadow pass backward and forward against the little slit of dim light which shone out from under the door.
Chpt 12
And thus was solved the mystery of the sinister house with the copper beeches in front of the door.
Chpt 12

Definitions:

(1) (sinister)
evil or harmful; or making an evil or frightening impression
(2) (meaning too rare to warrant focus)
Much more rarely and only in very old usage, sinister can refer to the left side of something.