Naive or unsophisticated
Having knowledge or discernment of something:
Having the ability to perceive; keen in discernment.
The definition of observant is someone who is good at noticing things, or someone who follows the rules and requirements of a particular religion.
Vigilantly attentive; watchful:
Without sleep; sleepless.
Wary is defined as watchful or cautious.
Find another word for open-eyed. In this page you can discover 19 synonyms, antonyms, idiomatic expressions, and related words for open-eyed, like: wide-eyed, intrigued, astounded, startled, gazing, aware, perceptive, surprised, observant, watching and alert.