The phrase "was all for" might seem limited in its use, but in fact, there are plenty of synonyms that can be used in its place. Expressions like "enthusiastically endorsed," "wholeheartedly supported," and "completely behind" can all convey the same idea. Other options could include "fully in favor of," "strongly advocating," or "firmly championing." Regardless of which synonym is chosen, the goal should be to convey a sense of genuine support and commitment. By using one of these alternative phrases, writers can add variety and nuance to their sentences while still getting their point across in a clear and effective way.