retrograde

1. To cause (a land feature such as a coastline or waterfall) to undergo retrogradation, that is, to travel in the direction of the land or upstream due to erosion. (transitive)
2. To change (minerals, rocks, etc.) metamorphically through a decrease in pressure or temperature. (transitive)
3. To revert to an inferior or less developed state; to decline, to regress. (intransitive)
4. Of a celestial body, especially a planet: to show retrogradation; to seem to move across the sky in the opposite direction from its ordinary movement. (intransitive)
5. Of a land feature: to travel in the direction of the land or upstream due to erosion. (intransitive)
6. To retreat or withdraw from a position. (intransitive)

He/she/it retrogrades · Past retrograded · Past participle retrograded · -ing form retrograding