The term retro-cessions refers to the act of returning something to its previous state or position. While there are no direct antonyms for this term, there are several words that imply the opposite meaning. Progress may be considered an antonym, as it involves moving forward rather than regressing backwards. Other possible antonyms could include advancement, development, and evolution, all of which suggest forward movement and growth. Additionally, words like modernization, innovation, and transformation all convey the idea of change and improvement, which is in direct opposition to the idea of retro-cessions.