Direct Opposites:
* Unpleasant: This is the most straightforward opposite.
* Disagreeable: This emphasizes the negative aspects of something.
Other words that convey a negative or contrasting feeling:
* Awful
* Horrible
* Repulsive
* Offensive
* Uncomfortable
* Distressing
* Painful
* Depressing
Less direct but still relevant:
* Neutral: If something is neither pleasant nor unpleasant, it is neutral.
* Difficult: This suggests something challenging, even if not necessarily negative.
* Harsh: This implies a negative quality, perhaps in terms of texture, sound, or demeanor.
To choose the best word, consider the specific context and the type of unpleasantness you want to express.