The word retro-cedes means to move backward or retreat. Antonyms of retro-cedes would be to move forward or advance. Some possible antonyms could be words like progress, proceed, advance, move ahead, or forge ahead. These words suggest moving forward or making progress in some area, whether it be personal or professional. Another possible antonym for retro-cedes could be conquer, suggesting a more aggressive and assertive movement forward. Whatever the antonym may be, it is clear that the opposite of retro-cedes is to move forward and make progress instead of retreating or going backward.