When you are not present in a place where you are supposed to be, the phrase "be absent from" is often used to describe your situation. However, there are several other synonyms that can be used instead of this phrase, such as "missing", "gone", "nonexistent" and "away". These words can be used to describe a person who is not present in a meeting or a class, or an object that is not in the expected place. "Absent" is another synonym that is frequently used, which indicates the lack of presence in a specific location. It is important to have knowledge about different words that can be used to describe absence, to avoid repetition in speech or writing.