When you need to complete a task or take action, "do it" is a common phrase used to communicate that intention. However, there are several synonyms for this phrase that can add variety and clarity to your language. Some alternatives include "get it done," "take care of it," "handle it," "execute it," "accomplish it," "perform it," "finish it," "undertake it," "see to it," "fulfill it," "carry out," and "follow through." Using synonyms can help prevent repetition in your writing or speech and emphasize the urgency or importance of the task at hand.