| killing |
| knockabout(adjective, action, rough) |
| not easy(expression, tough, severe, difficult, painful) |
| painstaking(adjective, thorough, exertion, meticulous) |
| particular(adjective, thorough, meticulous, painstaking) |
| passionate(adjective, vigorous) |
| persnickety(adjective, thorough, meticulous, painstaking) |
| picky(adjective, thorough, meticulous, painstaking) |
| plodding |
| potent(adjective, strong, tough, energetic, powerful) |
| prolific(adjective, vigorous) |
| punctilious(adjective, thorough, meticulous, painstaking) |
| punctual(adjective, thorough, meticulous, painstaking) |
| relentless(difficult, energetic, vigorous, unrelenting, stressful) |
| rough-and-tumble(adjective, action, rough) |
| scrupulous(adjective, thorough, meticulous, painstaking) |
| sincere |
| slavish(adjective, tough, rough, difficult, heavy) |
| snappy(adjective, strong, tough, energetic, powerful) |
| spanking(adjective, strong, tough, energetic, powerful) |