The antonyms for the word "more pleasureful" can be defined as things or experiences that lack enjoyment or satisfaction. Some antonyms for this phrase include pain, discomfort, displeasure, suffering, and unhappiness. These words can be used to describe situations that are unpleasant or undesirable, such as a migraine headache or a bad breakup. It is important to remember that the concept of pleasure is subjective and can vary greatly from person to person. What one individual finds pleasurable may not be the same as another, and vice versa. Therefore, it is essential to consider individuals' preferences and tastes when discussing pleasure and its antonyms.