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Phonetics
/əbˈzɜːvənt/
/əbˈzɝvənt/
adjective
Alert and paying close attention; watchful.
Example: The observant police officer noticed that my tax disk was out-of-date.Diligently attentive in observing a law, custom, duty or principle; regardful; mindful.
Example: I was normally observant of the local parking restrictions.