| A | B |
|---|
| abettor | one who encourages or assists in the achievement of a purpose |
| agitator | one who excites or stirs up |
| arbiter | one who judges disputes |
| barterer | one who trades goods or services for other goods or services |
| benefactor | one who gives help |
| cartographer | one who makes maps |
| caterer | one who provides food and services for an occasion |
| conspirator | one who works secretly with others to plan a wrongdoing |
| dispenser | one who, or that which, gives out or administers |
| intruder | one who enters without an invitation |
| lexicographer | one who writes or compiles dictionaries |
| malefactor | one who commits a crime |
| precursor | one who, or that which, comes before and indicates what will happen |
| predecessor | one who comes before |
| propellor | that which moves something forward |
| perveyor | one who supplies |
| stabilizer | that which prevents or retards an unwanted change |
| stenographer | one who transcribes shorthand |
| successor | one who comes after |
| traitor | one who betrays a trust |
