Frankly is an adverb that means to speak or act openly, honestly, and directly. Some of the synonyms of Frankly are candidly, truthfully, forthrightly, plainly, sincerely, directly, openly, straightforwardly, unequivocally, bluntly, honestly, and frankly speaking. These words convey the meaning of expressing oneself in a straightforward, honest fashion. The use of these synonyms can help a writer or speaker to communicate their thoughts and intentions in a more precise and clear manner. Using synonyms not only adds variety to one's writing but also help to capture the reader's attention by presenting a more nuanced and thoughtful argument.