What is the term for a situation where actions are accepted after being done without permission?

The correct term for a situation where actions are accepted after being done without permission is agency by ratification. In this context, ratification occurs when a principal approves or adopts actions that were initially unauthorized. When the principal expresses agreement to the actions taken by the agent, even though they were not authorized at the outset, it retroactively legitimizes those actions. This can happen explicitly through direct approval or implicitly through conduct that indicates acceptance.

Agency by delegation, on the other hand, refers to the process where an agent transfers their authority to another party, which does not involve prior unauthorized actions. Agency by waiver implies the relinquishing of a right or claim, again not directly related to actions taken without prior permission. Agency by consent involves mutual agreement, which is not applicable in the case of actions taken without the principal's initial approval. Thus, agency by ratification is the most fitting term for the situation described.