slang

/slæŋ/
noun
  1. Very informal words and phrases that are more common in speech than in writing, often used by a particular group of people.
    • Each profession has its own slang, like 'stat' in medicine.
    • The word 'cool' started as slang but is now used everywhere.
    • Teenagers often use slang that their parents don't understand.
adjective
  1. Relating to or being very informal language.
    • The author used slang expressions to make the dialogue sound real.
    • The dictionary marks certain words as 'slang' to warn readers.
    • His speech was full of slang words from the 1990s.
Antonyms