When it comes to describing the act of investigating again, there are a number of synonyms that can be used in place of "reinvestigating." Some of these options include re-examining, reviewing, analyzing, scrutinizing, and probing. Each of these words conveys the idea of a thorough examination or exploration of a subject, but with slightly different connotations. For example, "re-examining" might suggest a more systematic process of going over evidence, while "probing" might imply a deeper, more invasive form of investigation. Ultimately, the choice of synonym will depend on what kind of tone or emphasis one wants to convey in their writing or speech.