" undefined "

 [ "undefined" ]

1: A word in the urbandictionary that is lacking definition.

  * e.g.,  ... This word was previously undefined. 

 [ "undefined" ]

1: The word that just popped up when you searched for a word that isn't in urban dictionary.

  * e.g.,  ... You: WTF!11!!ONE!!! UNDEFINED??!?!?!! WTF! 

 [ "undefined" ]

1: What you see when someone deletes your definition.

  * e.g.,  ... This word is undefined 

 [ "undefined" ]

1: undefined is just what it says

  * e.g.,  ... That is undefined to the MAX 

 [ "undefined" ]

1: undefined

  * e.g.,  ... undefined 

 [ "undefined" ]

1: When you use Javascript and confused this between null and 0

  * e.g.,  ... undefined == null // true 

 [ "is undefined" ]

1: the description of a word that has not been defined in the by urban dictionary viewers.

  * e.g.,  ... is undefined is undefined 

 [ "Undefined" ]

1: See the example below.

  * e.g.,  ... See the above definition for undefined. 

 [ "Undefined" ]

1: The worst curse word in math

  * e.g.,  ... Ugh this math is frustrating! ITS SO UNDEFINED!! 

 [ "Undefinable" ]

1: Ummm... Oh, right. Unable to define.

  * e.g.,  ... I made it seem like this word was undefinable, for a second there.