The word "slicker" can have a few different meanings, so let's break them down one by one.
A person who deceives: A "slicker" can refer to someone who tries to convince you of something that is not true. This person might be very charming or persuasive, making it easy to believe what they say, even when it's not accurate.
Stylish person: It can also describe someone who is very well-dressed and has good manners. This person often appears polished or sophisticated.
Raincoat: A "slicker" can refer to a type of raincoat, often made from a waterproof material. It's designed to keep you dry in the rain.
While there aren't specific idioms or phrasal verbs that directly use "slicker," you might encounter phrases like "slick talker," which describes someone who speaks in a smooth, persuasive way that may not be entirely truthful.
"Slicker" can mean a deceiver, a stylish person, or a type of raincoat. Depending on the context, it can have positive or negative connotations.