Similar in meaning but less extreme:
* Servility: A willingness to serve others, especially in a submissive way.
* Subservience: The state of being subordinate or submissive.
* Deference: Showing respect and politeness to someone, often to a superior.
* Compliance: Willingness to follow instructions or rules.
* Amenability: Being open to suggestion and willing to cooperate.
Similar in meaning but with a negative connotation:
* Fawning: Showing excessive flattery or admiration.
* Ingratiation: Trying to gain favor by flattering someone.
* Flattery: Exaggerated praise, often insincere.
* Toadyism: The practice of flattering someone to gain advantage.
Other related words:
* Sycophancy: Behaving obsequiously, especially for gain.
* Cringing: Showing fear or servility.
* Kowtowing: Showing exaggerated deference or respect.
The best choice depends on the specific context and the nuance you want to convey.