Ingratiatory is an adjective that pertains to the act of pleasing someone in order to gain favor or approval. It is often used in descriptions of behavior that seems overly flattering or insincere. Some synonyms for the word ingratiatory include suggestive, fawning, obsequious, flattering, sycophantic, and deferential. These words describe behavior that is often seen as insincere or manipulative, as the person exhibiting this behavior is trying to gain something from the person they are trying to please. These words are often used in critiques of behavior or in warnings about people who may be trying to manipulate others for their own gain.