Kissups, also known as brown-nosers or suck-ups, refer to individuals who flatter or try to impress someone in authority. They seek to gain favor by excessively praising or doing favors for them, often at the expense of others. Other possible synonyms include bootlickers, toadies, sycophants, yes-men, or flatterers. These individuals can be manipulative and insincere, and their behavior is often seen as disingenuous by others. While they may achieve short-term success, their actions can lead to resentment and mistrust from others in the long run. It's important to be aware of these types of individuals and avoid becoming one ourselves.