A fawning flatterer is someone who excessively compliments or flatters another person in order to gain favor. This type of behavior is often associated with sycophants, crawlers, and toadies. A SYCOPHANT is someone who behaves obsequiously in order to gain favor or advantage. A CRAWLER is someone who grovels or behaves servilely in order to gain favor or advantage. Lastly, a TOADY is someone who acts obsequiously in order to gain favor or advantage.