American English

Definition of punctilious adjective from the Oxford Advanced American Dictionary

 

punctilious

 adjective
adjective
NAmE//pʌŋkˈtɪliəs//
 
(formal)
 
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very careful to behave correctly or to perform your duties exactly as you should a punctilious host
punctiliously
 
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adverb She observed the rules punctiliously.
punctiliousness
 
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noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: punctilious