Which suffix indicates a person who performs an action?

The suffix that indicates a person who performs an action is commonly represented by the suffix "-or." This suffix is typically attached to verbs to create nouns that denote someone who carries out a specific activity or practice related to that verb. For example, the word "actor" refers to a person who acts, while "director" refers to someone who directs.

While other suffixes like "-ist" also indicate professions or practitioners (such as "artist" or "scientist"), the "-or" suffix is especially prevalent in words originating from Latin, denoting a direct agent performing the action of the verb. In contrast, the suffixes "-ment" and "-tion" are used to denote the result or process of an action, rather than the person performing it. Therefore, "-or" is the most fitting choice for identifying a person who performs a specific action.