You might hear phrases like whassupp in some casual or informal conversations these days. **AWOOS - Many must wonder what does this slang mean. Whats upp is a condensed colloquialism of what is up or whats up When a person asks ‘what’s up meaning, it​ usually means that he wants to know what’s going in somebody’s life or how somebody is doing. In the US it has become a friendly salutation amongst peers or friends. So, If you listen to the word said ‘whats upp’ It Usually means that they are just asking your good or what is new in your life. By knowing & #39;whats up meaning', communicating in an informal way is much easier. Just remember, ‘whats upp’ and ‘whats up’ are interchangeable. Both will mean the same thing: How it goes and/or you feel right now. Note that such phrases are great to throw in with casual discussions but not very appropriate in formal settings. So, next time you hear ‘whats upp,’ just know they’re only checking-in; starting a dialogue on what’s happening.