\Sin"is*trous\, a. [See {Sinister}.]
1. Being on the left side; inclined to the left; sinistral.
   ``Sinistrous gravity.'' --Sir T. Browne.
2. Wrong; absurd; perverse.
         A knave or fool can do no harm, even by the most
         sinistrous and absurd choice.         --Bentley.