Slang greetings are extremely informal, and should only be used with people that you know very well, and feel very comfortable with.
- Are you OK?, You alright?, or Alright mate? This casual way of asking both “hello” and “how are you” is common in Britain. You can respond “yeah, fine”, or simply “alright”. 2. Howdy! This is a very informal abbreviation of “how do you do?” in certain parts of Canada and the U.S. Don´t use outside of these regions, you will sound like a cowboy. 3. Whazzup? These greetings are abbreviations of “what’s up?” which are common among teenagers. 4. G’day mate! This casual greeting is an Australian abbreviation of “good day”. 5. Hiya! This greeting, short for “how are you?”, is commonly used in certain parts of England.