| stern(adjective, hard, easy, severe, rough) |
| exigent(adjective, hard, tough, firm, difficult) |
| oppressive(adjective, dull, hard, tough, severe) |
| laborious(adjective, dull, hard, tough, severe) |
| strenuous(adjective, dull, hard, tough, severe) |
| finical(adjective, particular, meticulous, fussy, fastidious) |
| onerous(adjective, dull, hard, tough, severe) |
| precise(adjective, severe, fastidious) |
| troublesome(adjective, hard, tough, severe, difficult) |
| conscientious(adjective, valuable, duty, reliable, responsible) |
| trying(adjective, dull, hard, tough, severe) |
| careful(adjective, harsh, rigid, strict, thorough) |
| punctilious(adjective, meticulous, fussy, fastidious, exacting) |
| stringent(adjective, severe, rigid, tight) |
| time-consuming |
| nice(adjective, hard, correct, severe, rough) |
| bothersome(adjective, hard, tough, severe, difficult) |
| choosy(adjective, critical, particular, meticulous, fussy) |
| exact(adjective, careful, painstaking) |
| jealous(adjective, wary) |