The word "missing" is often used to refer to something or someone that is lost, absent, or unaccounted for. There are several synonyms for "missing" that can be used in different contexts. For example, the words "absent" or "gone" can be used to refer to something or someone that is not present. "Lost" can be used to refer to something that has disappeared or cannot be found. "Mislaid" or "misplaced" can be used to suggest that something has been put in the wrong place. "Vanished" can be used to suggest that something or someone has disappeared suddenly without a trace. All of these synonyms can be very useful in different scenarios and can be used to convey different meanings.