The Full form of SO is Significant Other, or SO stands for Significant Other, or the full name of given abbreviation is Significant Other.
SO (Significant Other)
Significant Other is known as SO.
SO all full forms
All the above full forms are related to SO. A little information is given about one of these full forms. If you are not satisfied with the information given about 'Significant Other (SO)', then comment. Or if you know more about 'Significant Other (SO)', then write.