painstaking
payn stay king
- s characterized by extreme care and great effort
painstaking research
- The investigation was painstaking as the clues had gone cold due to passage of time.
- Painstaking detective work finally unravelled the mystery of the lost ship at the high seas.
- By dint of painstaking labor on the part of its developer, Bungie, it has been refined over three installments to the point where it delivers only pure, unadulterated gaming bliss.