Synonyms for Open-eyed | Open-eyed at Open Dictionary of English by LearnThat Foundation

Synonyms for Open-eyed (same or very similar meaning)

WordNet sense 1 (carefully observant or attentive; on the lookout for possible danger):

vigilant, watchful

WordNet sense 2 (very attentive or observant):

alert

From the ODE community, based on WordNetadd/edit