| sad(adjective, hard, difficult, complex) |
| backbreaking(adjective, hard, difficult, complex) |
| burly(adjective, hard, great, difficult, complex) |
| rough(adjective, hard, difficult, complex) |
| serious(adjective, hard, difficult, complex) |
| toilsome(adjective, hard, difficult, complex) |
| bulky(adjective, great, big, heavy, awkward) |
| grievous(adjective, hard, difficult, complex) |
| severe(adjective, hard, difficult, complex) |
| stale(adjective, dull, hard, difficult, complex) |
| dull(adjective, dull, quiet, severe, slow) |
| awkward(adjective, heavy, substantial, large, stiff) |
| unwieldy(adjective, heavy, awkward, substantial, inept) |
| cumbersome(adjective, easy, severe, harsh, heavy) |
| boring(adjective, dreary, drab, colorless, arid) |
| slow(adjective, dull, boring, tedious, lazy) |
| clumsy(adjective, difficult, heavy, awkward, stiff) |
| elephantine(adjective, good, big, heavy, awkward) |
| large(adjective, great, big, heavy, full) |
| big(adjective, great, heavy, significant, substantial) |