An air superiority fighter, also spelled air-superiority fighter, is a type of fighter aircraft designed for entering and seizing control of enemy airspace as a means of establishing complete dominance of one side's air forces over the other side's (air supremacy). Air superiority fighters are designed primarily to effectively engage enemy fighters, more than other types of aircraft, although some may have a secondary role for air-to-ground strikes. They are usually more expensive and procured in smaller numbers, compared to multirole fighters which are designed with a balance between air-to-air and air-to-ground capabilities.