| feeling(adjective, understanding, kind, moving, gentle) |
| grievous(adjective, hard, difficult, complex, painful) |
| intricate(adjective, hard, difficult, complex) |
| knotty(adjective, hard, difficult, complex) |
| severe(adjective, hard, difficult, complex, painful) |
| sophisticated(adjective, hard, difficult, superior, complex) |
| ticklish(adjective, kind, easy, gentle, difficult) |
| diplomatic(adjective, kind, ability, delicate, union) |
| grave(adjective, hard, difficult, complex) |
| nasty(adjective, hard, difficult, complex) |
| profound(adjective, hard, difficult, complex, subtle) |
| rugged(adjective, hard, difficult, delicate, uncertain) |
| sad(adjective, hard, difficult, complex) |
| serious(adjective, hard, difficult, complex) |
| trying(adjective, hard, difficult, complex) |
| unbearable(adjective, hard, difficult, complex, painful) |
| weighty(adjective, hard, difficult, complex) |
| disturbing(adjective, hard, difficult, complex) |
| esoteric(adjective, hard, difficult, complex) |
| hard(adjective, difficult, complex) |