The term "final decision" could be replaced with several other phrases, depending on the context of the decision and the degree of authority behind it. Some possible synonyms for "final decision" include "ultimate verdict," "conclusive resolution," "definitive ruling," "binding determination," or "ultimate outcome." Additionally, the phrase could be simplified to "decision," "verdict," or "ruling," depending on the sentence structure and level of formality. Ultimately, the best synonym for "final decision" will be the one that best captures the tone and intention of the original phrase within the broader context of the sentence or paragraph.