With agent nouns: correct, exact, true. Now chiefly in right believer.

Of actions, investigations, etc.: Characterized by special care, careful, accurate, minute.

Involving or exercising careful judgement or observation; exact, precise; scrupulous; (sometimes) spec. very precise in timekeeping; punctual. Obs…

Minutely exact or careful (in non-moral matters); strictly attentive even to the smallest details; characterized by punctilious exactness.

Prim, demure, formal; precise.

figurative and in extended use. Giving a clear or precise impression; clearly defined; (also) concentrated, intensified.