Slang: speaking fluently means understanding slang

Slang is a type of language consisting of words and phrases that are regarded as very informal, are more common in speech than writing, and are typically restricted to a particular context or group of people. For example, there can be teenage slang, business slang, sport-specific slang, and many other types.

It’s a good idea to learn some English slang words because you never know when you’ll come across them. Even if you don’t use it yourself because you prefer formal vocabulary, knowing what specific slang terms mean can help you avoid misunderstandings.