There are several synonyms that can be used in place of the phrase "in a dignified manner." Some options include "gracefully," "majestically," "respectfully," "regally," "courteously," "decorously," "appropriately," "formally," and "solemnly." Each of these words conveys a sense of poise, respect, and honor, which is the essence of dignified behavior. Using synonyms for "in a dignified manner" can help to vary your writing style and add greater nuance and detail to the emotions and behaviors you are trying to convey. It is important to choose the right synonym that accurately reflects the tone and mood of your writing.