"YH" is a two-letter abbreviation that is a condensed way of writing the word "Yeah" or "Yes". It is frequently used in online and text conversations as it is in face-to-face conversations. The term "abbreviation" refers to a shortened version of a term or phrase. "YH" is very informal, so it should only be used in informal situations. It is used to answer in the affirmative to a question or agree with a statement. "YH" can also mean "Yuh-Huh," which also means "yes". Depending on the context, "YH" can also mean "You Here?" or "You Home?".