observant

 
Pronunciation: /əbˈzəːv(ə)nt/

adjective

  • 1quick to notice things: her observant eye took in every detail
  • 2adhering strictly to the rules of a particular religion, especially Judaism: an observant Jew

noun

  • (Observant) historical a member of a branch of the Franciscan order that followed a strict rule.

Origin:

late Middle English (as a noun): from French, literally 'watching', present participle of observer (see observe)