| pacifier(noun, mediator, intermediary, arbitrator, diplomat) |
| parleier |
| passer |
| peacekeeper(noun, mediator, intermediary, arbitrator, diplomat) |
| peacemonger(noun, mediator, intermediary, arbitrator, diplomat) |
| placater(noun, mediator, intermediary, arbitrator, diplomat) |
| principal(representative, operative, manager, deputy, mediator) |
| proctor(representative, operative, manager, deputy, mediator) |
| promoter(representative, manager, mediator) |
| proxy(noun, agent, substitute, representative, operative) |
| representative(noun, substitute, operative, manager, alternate) |
| salesperson(representative, operative, manager, deputy, mediator) |
| servant(representative, operative, manager, deputy, mediator) |
| shop steward |
| spokesman |
| spokeswoman |
| statesperson(noun, mediator, intermediary, arbitrator, diplomat) |
| steward(representative, operative, manager, deputy, mediator) |
| substitute(representative, operative, manager, alternate, deputy) |
| surrogate(substitute, representative, operative, manager, alternate) |