groveller
/ˈɡroʊvələr/Definitions
1. noun
A person who grovels, especially one who tries to gain favor by flattering or submitting to someone in a humiliating way.
“The politician’s groveller of a press secretary tried to downplay the scandal, but it only made things worse.”
2. verb
To speak or act in a submissive or flattering way, especially in order to gain favor or influence.
“He grovelled to the boss, promising to work extra hours if he got a promotion.”