The phrase "doth about it" can be replaced with several synonyms that convey a similar meaning. Some of these synonyms include "concerns," "pertains to," "relates to," "touches upon," and "has to do with." All of these phrases convey the idea that a particular subject or topic is being discussed or considered. "Doth about it" is an older and more formal way of expressing this concept, whereas these synonyms are more modern and commonly used. Regardless of the phrase used, it is important to clearly communicate the subject matter being discussed in order to effectively communicate and understand the message being conveyed.