| agent noun |
| Definition:
A noun that labels the person or thing that is the source of action. As opposed to a recipient noun, which labels the person or thing that is receiving the action. Note: The suffixes -er, -ist, and -or are used to form agent nouns. |
| Example:
(1) adviser (someone who advises) (2) evangelist (someone who evangelizes) (3) guarantor (someone who gives a guaranty) |