1. in a backward direction or manner; moving or developing in reverse
2. in a way that returns to an earlier or less advanced state

Examples

• The planet appeared to move retrogradely across the night sky.
• His memory functioned retrogradely after the accident.
• The disease caused his motor skills to develop retrogradely.
• The satellite orbited retrogradely around the planet.
• Her condition progressed retrogradely despite treatment.
• The film’s narrative moved retrogradely through time.