When something is completed and cannot be undone, there are several synonyms that can be used instead of the phrase "what's done." Some possible alternatives include "finalized," "settled," "concluded," "resolved," "finished," or "completed." These words suggest that a decision or action has been made, and that there is no going back. Other options might include "decided," "determined," "accomplished," or "carried out." Whatever the context, choosing the right synonym can help to convey a sense of finality and closure, and imply that further discussion or negotiation may not be necessary.
