KT is most commonly known as an acronym for the telecommunications company, Korea Telecom. However, in informal language, the term "KT" has been adopted as a colloquial term to refer to a person's knowledge or expertise about a particular subject or field. There are a number of synonyms for this meaning of the term, including mastery, proficiency, expertise, adeptness, and capability. Each of these words describe a level of knowledge or skill that someone possesses in a particular area and can be used interchangeably with KT in conversation or writing. So, if someone asks about your KT in a certain topic, they are simply asking about your level of expertise in that area.