* Re-: This prefix means "again" or "back" and is used in words like "relate," "re-establish," and "re-engage," all of which imply a connection or relationship.
* Inter-: This prefix means "between" or "among" and is used in words like "interrelate," "interact," and "interpersonal," all of which emphasize a relationship or connection between entities.
* Co-: This prefix means "together" or "jointly" and is used in words like "cooperate," "co-exist," and "co-ordinate," all of which imply a shared relationship or connection.
* Trans-: This prefix means "across" or "through" and is used in words like "translate" and "transcend," which can be used to describe the process of bridging a gap or establishing a connection.
Therefore, there isn't a single prefix for "relate," but several prefixes can be combined with other words to create words that encompass the concept of relating.