Sleaziness is a term used to describe behaviour that is considered morally or socially unacceptable. People who are described as sleazy are often perceived as dishonest, untrustworthy, and lacking in integrity. Synonyms for sleaziness include words like disreputable, unscrupulous, shady, and questionable. Other synonyms include words like sordid, seedy, and immoral. These terms all describe behaviour or situations that are perceived as being less than ethical. Whether it is a person's behaviour, a business's practices, or a situation that is being described, synonyms for sleaziness all suggest a lack of honour or respectability.