Main entry: unilateral, one-sided
Definition: involving only one part or side
Usage: unilateral paralysis; a unilateral decision
Antonyms: multilateral, many-sided
Definition: having many parts or sides
Main entry: unilateral
Definition: tracing descent from either the paternal or the maternal line only
Antonyms: indirect
Definition: not direct in spatial dimension; not leading by a straight line or course to a destination
Antonyms: alternating
Definition: (of a current) reversing direction
Antonyms: indirect
Definition: extended senses; not direct in manner or language or behavior or action
Antonyms: inverse
Definition: opposite in nature or effect or relation to another quantity
Antonyms: retrograde
Definition: moving from east to west on the celestial sphere; or--for planets--around the sun in a direction opposite to that of the Earth
Antonyms: indirect, collateral
Definition: descended from a common ancestor but through different lines