| trying(adjective, hard, difficult, complex) |
| arduous(adjective, hard, difficult, complex, awkward) |
| devious(adjective, person, sharp, fake, false) |
| rough(adjective, hard, easy, difficult, complex) |
| slippery(adjective, keen, sharp, smart, delicate) |
| sophisticated(adjective, hard, difficult, deception, complex) |
| tough(adjective, hard, difficult, complex) |
| deceitful(adjective, mean, smooth, wrong, fake) |
| involved(adjective, hard, difficult, delicate, complex) |
| laborious(adjective, hard, difficult, complex, awkward) |
| rugged(adjective, hard, difficult, delicate, uncertain) |
| scheming(adjective, ability, honest, dishonest, means) |
| severe(adjective, hard, difficult, complex, awkward) |
| slick(adjective, sharp, informal, false, dishonest) |
| toilsome(adjective, hard, difficult, complex, awkward) |
| elaborate(adjective, characteristic, hard, difficult, complex) |
| guileful(adjective, mean, smooth, wrong, sharp) |
| profound(adjective, hard, difficult, complex, cunning) |
| burdensome(adjective, hard, difficult, complex, awkward) |
| insidious(adjective, sharp, dishonest, cunning, deceitful) |