| systematic(adjective, exact, careful, regular, precise) |
| tidy(adjective, exact, careful, regular, precise) |
| to the point(expression, adjective, idiom, precise, accurate) |
| together(adjective, exact, careful, regular, neat) |
| tough(adjective, strong, hard, severe, harsh) |
| unrelenting(adjective, strong, hard, tough, severe) |
| unsparing(adjective, strong, hard, tough, harsh) |
| valid(adjective, severe, harsh, stiff, rigid) |
| very accurate(expression, adjective, precise, accurate, dead-on) |
| well-regulated(adjective, exact, careful, regular, neat) |
| aboveboard |
| according to Hoyle(noun, authority) |
| according to regulation |
| according to rule |
| adamant(adjective, strong, hard, tough, sturdy) |
| adamantine(adjective, strong, hard, tough, sturdy) |
| arrangement(noun, system, procedure, method, formula) |
| assiduous |
| be coming(solid, square, disciplined, structured, clay) |
| be fitting(disciplined, structured, clay, grey, heather) |