assistant
US /əˈsɪs.tənt/
UK /əˈsɪs.tənt/

1.
a person who helps in particular work or activity
:
•
She works as a personal assistant to the CEO.
•
The doctor's assistant scheduled my appointment.
1.
helping or providing assistance
:
•
He played an assistant role in the project.
•
The assistant manager is in charge when the manager is away.