adjective.
Strictly attentive to minute details of form in action or conduct. synonym: meticulous.
adjective.
Precise; scrupulous.
The Century Dictionary and Cyclopedia
Attentive to punctilios; very nice or precise in behavior, ceremony, or intercourse; exact (sometimes, to excess) in the observance of rules or forms prescribed by law or custom.
Synonyms Particular, precise, scrupulous.
the GNU version of the Collaborative International Dictionary of English
adjective.
Attentive to punctilio; very nice or exact in the forms of behavior, etiquette, or mutual intercourse; precise; exact in the smallest particulars.