observant has definitions from the field of law
1
[ adjective ] paying close attention especially to details

Related terms

attentive

2
[ adjective ] quick to notice; showing quick and keen perception

Synonyms

observing

Related terms

perceptive

3
[ adjective ] (of individuals) adhering strictly to laws and rules and customs

Synonyms

law-abiding

Examples

"law-abiding citizens" "observant of the speed limit"

Related terms

lawful

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