| stern(adjective, hard, tough, easy, severe) |
| conscientious(adjective, careful, thorough, meticulous, fastidious) |
| finical(adjective, accept, fine, proper, precise) |
| picky(adjective, accept, tough, severe, fine) |
| tough(adjective, dull, hard, easy, severe) |
| critical(adjective, hard, tough, severe, fine) |
| exigent(adjective, difficult, harsh, heavy, serious) |
| oppressive(adjective, dull, hard, tough, severe) |
| painstaking(adjective, careful, thorough, demanding, particular) |
| choosy(adjective, accept, fine, proper, deliberate) |
| accurate(adjective, correct, proper, thoughtful, sober) |
| laborious(adjective, dull, hard, tough, severe) |
| squeamish(adjective, accept, precise, minute, meticulous) |
| strenuous(adjective, dull, tough, severe, rough) |
| stringent(adjective, hard, tough, severe, rough) |
| arduous(adjective, dull, hard, tough, severe) |
| discriminating(adjective, sharp, fine, rough, proper) |
| taxing(adjective, hard, tough, severe, rough) |
| thorough(adjective, careful, thoughtful, sober, scrupulous) |
| attentive(adjective, careful, thoughtful, sober, prudent) |