When it comes to the ultimate conclusion, there are various terms you can use instead of 'in the final/last analysis'. For instance, you can say 'in the end', 'ultimately', 'finally', 'lastly', 'at last', 'eventually', or 'when all is said and done.' These synonyms convey a sense of closure and completeness as they signal the conclusion of an argument or an analysis. They can help to emphasize the importance and significance of the final remarks in bringing the discussion to a satisfying end. When you use them appropriately, you can make your writing more engaging, succinct, and easy to follow.