Sinister

·adj On the left hand, or the side of the left hand; left;

— opposed to dexter, or right.

II. Sinister ·adj Indicative of lurking evil or harm; boding covert danger; as, a sinister countenance.

III. Sinister ·adj Wrong, as springing from indirection or obliquity; perverse; dishonest; corrupt; as, sinister aims.

IV. Sinister ·adj Unlucky; inauspicious; disastrous; injurious; evil;

— the left being usually regarded as the unlucky side; as, sinister influences.