There are various synonyms for the phrase "be afraid of boredom". Some of them include "dread monotony", "fear ennui", "apprehend dullness", "worry about tedium" and "anxiety about sameness". The common thread amongst all of these phrases is the fear or unease associated with the prospect of being bored. Many people actively seek to avoid boredom as it is often associated with negative feelings and a lack of excitement. However, it is important to recognize that boredom can be a natural and healthy part of life, and can even lead to creative thinking and problem-solving.