тщательно

1) General subject: accurately, carefully, choicely, closely, elaborate, elaborately, in depth, inly, intently, meticulously, microscopically, narrowly, point device, point-device, root and branch, scrupulously, thoroughly, to a nail, well, with accuracy, with great deliberation, assiduously

2) Colloquial: backward and forward, backwards and forward

3) French: a fond, fond

4) Engineering: extensively

5) Construction: painstakingly

6) Mathematics: cautiously, circumspectly, exhaustively, in detail, laboriously, with great care

7) Science: intimately

8) Makarov: intensively, nicely