punctilious
Concise Oxford English Dictionary © 2008 Oxford University Press:
punctilious /pʌŋ(k)ˈtɪlɪəs/
▶adjective showing great attention to detail or correct behaviour.
– derivatives
punctiliously adverb,
punctiliousness noun.
punctiliously adverb,
punctiliousness noun.
'punctilious' also found in these Oxford entries:

