Servile
/ˈsɜːr.vaɪl/ adjective mediumServile behavior shows an exaggerated eagerness to please or obey, often out of fear or desire for favor.
The assistant's servile agreement with every one of the director's ideas made honest feedback impossible.
Memory Trick
Servile clearly contains 'serve' - a servile person acts like a servant, bowing to every whim.