The word "un-doings" can be replaced with various synonyms depending on the context it's being used in. For example, if referring to mistakes or errors, synonyms that can be used include "blunders," "missteps," "oversights," or "failures." On the other hand, if referring to the reversal of actions, "undoings" can be replaced with "reversals," "redos," "corrections," or "amendments." Additionally, if referring to negative consequences or outcomes, synonyms such as "setbacks," "mistakes," "downfalls," or "failures" may be used. The context and tone of the writing will determine which synonym best fits the situation at hand.