When describing an ultimate or concluding action, "final gesture" is commonly used. However, there are several other synonyms that can effectively communicate a similar meaning, depending on the context of the situation. For example, "last act" or "closing move" can describe a significant end to a theatrical performance or a game. "Ultimate action" or "endgame" may be more appropriate when describing a serious decision or resolution. "Farewell symbol" or "parting gift" can convey a sense of sentimentality and remembrance. Finally, "concluding statement" or "closing remark" are useful in the context of a conversation, presentation or speech. It is important to choose the appropriate synonym when trying to convey a specific message or emotion.