Phobias Phobias are a very common disorder in the United States these days. The definition for phobia is "an abnormal or morbid fear or aversion" ("Oxford" 655). To be considered a phobia, a fear must cause great distress or interfere with a person’s life in a major way. The word phobia is Greek, therefore, any word that proceeds it should be Greek too. To coin a new phobia name, it is proper and only accepted to follow this rule. The rule has been broken many times in the past, especially by the medical profession. The medical profession is steeped in Latin and many times when forming a name for phobia, they use Latin.