The word "kissasses" is often used to describe people who are overly compliant, insincere, and try to gain favor or advantage by excessively flattering or praising others. Synonyms for "kissasses" include "brown-nosers," "bootlickers," "sycophants," "apple-polishers," and "toadies." These words are all used to describe people who exhibit fawning behavior towards those in power or authority. Other synonyms include "ass-kissers," "flatterers," "yes-men," "brown-nosers," and "boot-lickers." All of these words have negative connotations, and describe people who are seen as lacking in integrity or authenticity by others.