interj. Used to commend another's skill; largely synonymous with 'epic' or 'awesome'. Particularly suitable for use when viewing breakdancing performances. (Saying 'nooice' to commend someone else saying 'nooice' remains controversial but may lead to a heartfelt scenario.) Popularized through social media following its showcasing in a sketch on the television show Key & Peele.
Something so amazing that it exceeds the requirements for "nice" and deserves an "o." ; A combination of the meanings of the words "cool," "nice," and "awesome."
If the action/event/person being described did something that deserves much more recognition, the word "nooice" may be used.
Howie Mandealt: Hey everybody! Look at my creative name! It's funny because Howie Mandealt sounds like Howie Mandel who hosted "Deal or No Deal," while I fake hosted "Dealt or No Dealt"
Nice, being the origional and "correct" version of the word, is most commonly used, however, the two other spellings are perfectly acceptable, though there are differences. Niice, more intense than nice, and yet not so intense as niiice, is often used when something is funny or cool, though not as cool as something that is awesome. Niiice, being the most intense, is only to be used when something exceeds the awesomeness of nice AND niice.