Ass-kisser and Groveler

Ass-kisser noun - A person who tries to please someone in order to gain a personal advantage.

Groveler and ass-kisser are semantically related in sycophant topic. In some cases you can use "Groveler" instead a noun phrase "Ass-kisser", when it comes to topics like someone following orders without question, yes person.

Groveler noun - Someone who humbles himself as a sign of respect; who behaves as if he had no self-respect.

Ass-kisser and groveler are semantically related in sycophant topic. You can use "Ass-kisser" instead a noun "Groveler", if it concerns topics such as someone following orders without question, yes person.