| esoteric(adjective, hard, difficult, complex) |
| barbed(adjective, sharp, sharpness, acute, cutting) |
| ticklish(adjective, difficult, delicate, complex, tricky) |
| briery(adjective, sharp, fine, acute, cutting) |
| bristly(adjective, sharp, prickly, pointed, spiky) |
| setose |
| spiky(adjective, sharp, fine, sharpness, acute) |
| troublesome(adjective, hard, rough, difficult, delicate) |
| setaceous |
| thistly(adjective, sharp, sharpness, pointed) |
| awkward(adjective, tough, difficulty, difficult, delicate) |
| barbellate |
| bothersome(adjective, tough, difficult, tricky, problematic) |
| perplexing(adjective, hard, difficult, delicate, complex) |
| spinous(adjective, sharp, sharpness, pointed) |
| delicate(bad, hard, difficult, heavy, complex) |
| formidable(adjective, bad, difficult, delicate, complex) |
| briary(adjective, sharpness) |
| bristled |
| nettlesome(adjective, tough, easy, difficult, pain) |