1. moved backward or declined to a worse or less advanced state
Usage: past tense of retrograde
2. moved in a direction opposite to the normal or expected course
Usage: astronomy; past tense of retrograde

Examples

• The patient’s condition retrograded after the treatment was stopped.
• His skills retrograded due to lack of practice.
• The planet retrograded across the night sky.
• The negotiations retrograded when trust was broken.
• The economy retrograded during the recession.
• The satellite retrograded in its orbit around Earth.