Of a statement, idea, judgement, etc.: in accordance with reason, truth, or reality; right; true; factually correct. Often with connotations of…

That requires or involves great precision or accuracy. Now rare.

Perfectly correct or precise, esp. in matters of dress or appearance; scrupulous, neat, fastidious.

Of actions, processes, investigations, knowledge, etc.: Accurate in detail, strict, rigorous.

Near, close. Coming near the truth. Obsolete.

Extremely detailed and thorough; precise, or concerned with precision; strictly accurate or exact.

Perfect; exact.

Minutely accurate, exact, precise. Obsolete.

Specific, precise; accurate, exact; (of a method, procedure, etc.) detailed and thorough, rigorous.

Strict, rigorous, uncompromising. Of an examination, analysis, etc.: rigorous, stringent; that does not evade or ignore potential problems.

Of truth, accuracy, etc.: Exactly and rigidly observed; exactly answerable to fact or reality.

Characterized by dead accuracy.