The phrase "proper channels" is often used to refer to the appropriate methods for communication and decision-making within an organization or group. There are several synonyms for this phrase, including "official procedures," "established protocols," "formal channels," and "approved channels." Each of these phrases conveys a similar message of following established guidelines for communication and decision-making, rather than relying on informal or unauthorized channels. By using these synonyms, speakers and writers can add variety and specificity to their language, while still effectively conveying the concept of adherence to established procedures.