The word 'most unalert' refers to a state of being unaware or not paying attention. Some antonyms for this phrase would include vigilant, attentive, watchful, alert, and observant. These words denote a state of heightened awareness and attentiveness, where one is fully engaged and focused on their surroundings. Being alert is important in many situations, such as driving, crossing the street, or even participating in a meeting or conversation. By being attentive and alert, one is better able to anticipate and respond to potential risks or opportunities. Therefore, it is important to strive for being alert and not most unalert.