rigorous, thorough, strict
Tu vas annuler ton enquête rigoureuse.
You're going to cancel your thorough investigation.
— Fight Club (1999)
L'entreprise est très rigoureuse avec le retard.
The company is very strict about lateness.
Une approche plus rigoureuse est certainement possible.
A more rigorous approach is certainly possible.
La police mène une enquête rigoureuse mais n'a encore rien trouvé.
The police are conducting a thorough investigation but have not found anything yet.
— Andhadhun (2018)