Solitude is a state of being alone, away from others. However, there are several synonyms for the term "in solitude" that may have slightly different connotations or nuances. Some possible alternatives include "in seclusion," which emphasizes being hidden or kept away from others; "alone," which implies being without anyone else present; "isolated," which conveys a sense of being cut off or separated from society; or "in privacy," which suggests being free from interference or disturbance. Depending on the context, any of these synonyms could be a useful substitute for the phrase "in solitude".