agents

1. an active and efficient cause; capable of producing a certain effectExamples: "their research uncovered new disease agents"Synonyms: agent

2. a representative who acts on behalf of other persons or organizationsSynonyms: agent

3. a substance that exerts some force or effectSynonyms: agent

4. a businessman who buys or sells for another in exchange for a commissionSynonyms: agent, broker, factor

5. any agent or representative of a federal agency or bureauSynonyms: agent, federal agent

6. the semantic role of the animate entity that instigates or causes the happening denoted by the verb in the clauseSynonyms: agent, agentive role