What does ISTG mean?
ISTG is an acronym that means I swear to God. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious context.
Examples of ISTG
Who uses ISTG?
This is not meant to be a formal definition of ISTG like most terms we define on Dictionary.com, but is rather an informal word summary that hopefully touches upon the key aspects of the meaning and usage of ISTG that will help our users expand their word mastery.