What does good9 mean? View the definition of good9 and all related slang terms containing good9 below:
Usage of GOOD9
The abbreviation GOOD9 stands for \'goodnite\', which is an abbreviated version of \'good night\'. This is an expression used to say goodbye to someone at the end of an evening or before someone goes to sleep. It is a polite way to bid farewell and wish the other person a peaceful slumber. Examples of text messages using the abbreviation include: \'GOOD9! Have a good night!\', \'See you tomorrow! GOOD9!\', and \'It\'s time to rest! GOOD9!\'.