1
- quick to notice things善于观察的, 敏锐的：
her observant eye took in every detail.
她敏锐的目光捕捉到了每一个细节。
2
- adhering strictly to the rules of a particular religion, especially Judaism严格遵守（尤指犹太教）教规的。
noun
Observant
- historical a member of a branch of the Franciscan order that followed a strict rule〈史〉（遵守严格教规的）方济各会分会修士。
词源
late Middle English (as a noun)： from French, literally 'watching', present participle of observer （see OBSERVE）.