Act with is a phrase that implies performing an action in company or cooperation with someone or something else. To streamline communication and enhance understanding, it is imperative to have a broad vocabulary that encompasses varied synonyms for act with. Some equivalents or alternatives for act with include: collaborate, work together, join forces, partner, coordinate, cooperate, unite, combine, team up, and unite. These synonyms can be used interchangeably to denote shared participation, coordinated action, and mutual assistance. Using these synonyms in your communication helps to eliminate monotony and add variety to your writing.