Antonyms for "most unblinking" include words such as "inattentive," "distracted," "preoccupied," and "dreamy." Instead of being focused and observant, individuals who are inattentive tend to be disengaged and easily distracted. Similarly, individuals who are preoccupied may be lost in their thoughts, making them less aware of their surroundings. Finally, individuals who are dreamy can be highly imaginative, but may struggle to focus on the reality in front of them. All of these antonyms paint a picture of individuals who are not as reliable or attentive as those who are described as "most unblinking.