When it comes to taking action or making a plan to deal with a problem, the phrase "do about it" may often be used. However, there are many synonyms that can be used to convey the same message. For instance, the words "address", "resolve", "tackle", "handle", and "manage" can be used in place of "do about it". Other related phrases that can be used include "take steps", "find a solution", "deal with it", "take action", and "respond to it". These alternatives can not only add variety and interest to communication, but they can also help to clarify the intended meaning more effectively.