synonyms

2. unpleasant in a way that makes people feel offended, annoyed, or disgusted
4. arousing competitive interest, thought, or action; difficult in a way that is usually interesting or enjoyable
6. having nothing likely to provide cheer, comfort, or interest
7. tiresome because of length or dullness
11. filled with great joy : very happy
12. producing good or helpful results or effects
15. strikingly impressive especially in beauty or excellence

1. boringly uniform or unvarying
3. of poor quality : low or lower in quality; of little or less importance or value; low or lower in rank
5. engaging the interest to a marked degree
8. offensive or unpleasant to any sense (to see, to hear etc.)
9. causing great and oppressive fear
10. feeling sad; having a serious medical condition that causes a person to feel very sad, hopeless, and unimportant
13. marked by flawless craftsmanship or by beautiful, ingenious, delicate, or elaborate execution; pleasing through beauty, fitness, or perfection
14. physically harmful or destructive to living beings