The belief among certain astrologers that some planets, like Mars and Uranus, are destructive, negative influences, while others like Jupiter and Venus are positive and beneficial. See "Benefic."

A term commonly used by ancient astrologers to describe planets that are interacting unfavorably with each other.

A planet that operates in a difficult, unpleasant manner, often producing negative or unwanted results after much effort.

A term used in Classical and Medieval/Renaissance Astrology that refers to planets or aspects thought to have negative influence on the native. It usually refers to the planet Saturn and Mars, the Major Malefics (or Greater) . In modern Astrology minor Malefics (or Lesser) are also Uranus, Neptune and Pluto.

An archaic term applied to planets and aspects whose influence was thought to be negative or destructive. Traditionally, Saturn is the Greater Malefic; Mars, the Lesser Malefic. Uranus, Neptune and Pluto were also classed as malefics. The Square, opposition and other disharmonious aspects were once considered malefic aspects.