groveller

Definitions of groveller
1

n someone who humbles himself as a sign of respect; who behaves as if he had no self-respect

Synonyms:
apple polisher, bootlicker, fawner, groveler, truckler
Type of:
ass-kisser, crawler, lackey, sycophant, toady
a person who tries to please someone in order to gain a personal advantage

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