- Used to create an agent noun denoting someone associated with, concerned with, or engaged in a specified activity.
- -er, especially Etymology 4
- Part of the root derived mainly from French and Latin, e.g. informeren from French to inform, originally the infinitive ending of such French verbs.
- For verbs with this suffix, the participle prefix ge- may be optionally omitted. This is more commonly done for more common, disyllabic verbs and for participles in the active voice. It is seldom used in this way in the passive voice or with attributive past participles.