Nonattendant is a word used to describe someone who is absent or not present. There are many synonyms for this word, including absentee, missing, away, gone, and off-duty. These words all convey a sense of someone who is not currently available or present, whether it be physically or mentally. Other synonyms for nonattendant include absent-minded, distracted, preoccupied, and inattentive. These words imply that the person is not fully focused on their current situation or duties. Regardless of the specific synonym used, nonattendant can be a useful term for describing someone who is not participating in an activity or event.