Co-actively is an adverb that describes a situation or action that is done in cooperation or collaboration with others. Some synonyms for co-actively include jointly, collaboratively, cooperatively, in conjunction with, and in partnership with. These words imply that two or more parties are working together towards a common goal. Other synonyms for co-actively include mutually, reciprocally, and symbiotically. These words all suggest a relationship where each group benefits from the actions of the other. To use these synonyms effectively, it is important to understand their nuances and choose the right word for your specific situation.