We found 6 dictionaries that define the word what is up:

General (5 matching dictionaries)

1. what is up: Wordnik
2. what is up: Wiktionary
3. What is up: Dictionary.com
4. what is up: FreeDictionary.org
5. What is up: TheFreeDictionary.com

Slang (1 matching dictionary)

6. What is up: Urban Dictionary

Phrases: not what it is cracked up to be, more... ▸ Words similar to what is up ▸ Usage examples for what is up ▸ Idioms related to what is up ▸ Wikipedia articles (New!) ▸ Words that often appear near what is up ▸ Rhymes of what is up ▸ Invented words related to what is up