performer; executor; practitioner
Refers to a person who carries out an action, plan, or task. Often used in contexts like project execution, legal enforcement, or implementing a method.
As the executor of the project, he took full responsibility.
新しい教育法の実行者たちが集まって意見交換をした。
The practitioners of the new teaching method gathered and exchanged opinions.
Compound of 実行 (execution) + 者 (person). The reading is the standard on'yomi combination.