Strict, close, rigorous; painstaking, careful. Obsolete.

Keenly observant; acutely perceptive, penetrating; (in later use often of a look or gaze) that focuses intently or probingly on someone or something.

Of inquiry, investigation, inspection, observation, calculation, and the like: Characterized by close and unrelaxing effort, so as to let nothing…

Closely examining; searching.

Chiefly of language or mode of expression: precise, exact in detail.

Of examination, attention, etc.: Directed strictly and closely to the subject of consideration; strict, minute, searching.

Of a person: exacting; discriminating. Of an observation, investigation, record, etc.: very precise or particular; characterized by attention to…

Close, careful. Obsolete. rare.