What is another word for kiss-upping?
Pronunciation: [kˈɪsˈʌpɪŋ] (IPA) 
Kiss-upping is a term used to describe someone who is excessively flattering or obsequious towards another person in order to gain favor or advantage. However, there are several other synonyms for this term. Some of these include brown-nosing, bootlicking, fawning, groveling, toadying, ass-kissing, sucking up, and buttering up. These words all describe behaviors that are meant to ingratiate oneself with another person, often in a negative or insincere way. While it is sometimes necessary to show respect and affection towards others, it is important to do so in a genuine and authentic manner, rather than engaging in manipulative or deceitful behavior.
