adjective

• Inauspicious, ominous, unlucky, illegitimate (as in bar sinister).
• Evil or seemingly evil; indicating lurking danger or harm.
• (archaic) Of the left side.
• (heraldry) On the left side of a shield from the wearer's standpoint, and the right side to the viewer.
• (obsolete) Wrong, as springing from indirection or obliquity; perverse; dishonest.