Careful as to the standard of excellence; difficult to satisfy; particular; nice, fastidious. Obsolete. Particular about details, or as to manner…

That enters minutely into details; meticulous, attentive, sharp. Obsolete.

Attentive to the details of activities and arrangements; careful, precise, or scrupulous. Hence: exacting; fastidious.

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

Of an investigation, a study, an operation, etc.: Conducted with great minuteness. Hence transferred applied to personal agents or their attributes…

Scrupulous, painstaking. Obsolete.

= minutious, adj. Also (occasionally): of the nature of or composed of minutiae.

Characterized by attention to very small details; concerned with or attentive to minutiae.

Originally: overcareful about minute details, overscrupulous. Subsequently usually in more positive sense: careful, punctilious, scrupulous, precise.