Here are some key characteristics of someone described as "smarmy":
* Overly friendly and flattering: They go overboard with compliments and expressions of affection, often coming across as insincere.
* Manipulative: They use their charm and flattery to get what they want, even if it means taking advantage of others.
* Self-serving: Their motives are often self-centered, and they are more interested in what they can gain than in genuinely helping others.
* Lacking authenticity: They come across as fake or insincere, as if they are putting on an act to impress others.
Here are some synonyms for "smarmy":
* Slick
* Oily
* Insincere
* Devious
* Cloying
* Sycophantic
* Unctuous
The word "smarmy" is often used in a negative context, implying that someone is being insincere and manipulative.