Comradely is a word that implies friendship, fellowship, and a sense of brotherhood. As a result, synonyms for this term must express similar sentiments and describe an atmosphere of mutual warmth and understanding. Some words that might be used in place of "comradely" might include "amicable," "friendly," "affable," "cordial," "collegial," "convivial," "jovial," and "companionable." Each of these words would adequately describe the kind of relationship that exists between individuals who share a common interest or goal, and each would evoke a sense of warmth and camaraderie. Choose your synonym based on the context of your message and the tone you wish to convey.