"Get something done" is a common phrase that refers to completing a task or achieving a specific goal. However, there are many other synonyms that can be used instead of this phrase, such as "accomplish," "fulfill," "execute," "finish," "conclude," "finalize," "perform," "carry out," "realize," "attain," or "achieve." Each of these alternatives has a slightly different connotation, and the specific choice of word will depend on the context and desired tone of the sentence. Nonetheless, they all effectively convey the idea of completing a task or achieving a desired outcome, which is the primary meaning behind the phrase "get something done".