Acrophobia is the fear of heights, which is a common phobia among many people. If someone is an acrophobe, there are several synonyms you can use to describe them. One such synonym is "vertigo sufferer." This term describes someone who experiences dizziness and loss of balance when at high altitudes. Another synonym is "heights phobic," which refers to someone who is terrified of being up high. A third synonym is "aerophobe," which describes someone who has a fear of flying or being in an airplane. No matter what term you use to describe someone with acrophobia, it's essential to be understanding and compassionate towards their fears.