1. Usually this is used as an agent noun ( e . g. 2. :You might like to read about agent nouns and nominalization. 3. These-ee words are passive, the reverse of agent nouns . 4. :: : Hallucinator could be the agent noun ( nominative singular ) derived from the verb. 5. Every verb has a corresponding agent noun . 6. These words are primarily Latin agent nouns ending in "-or " and names of particles ending in "-on ". 7. Radke and Ancellotti e Cerri interpret the-t-form as a kind of active participle or agent noun and this would be the only possibility. 8. The "-er " words in the last passage are infinitives, not agent nouns , so it's the privilege " to " engrave, manufacture, and mint. 9. In this case, it is used as a native suffix for agent nouns . Gareth Hughes 15 : 42, 10 March 2007 ( UTC) 10. An agent noun , which performs the action of the verb in its root, usually ends with-or ( an " actor " acts ) or-er ( a " writer " writes ).