The phrase "am lookout" can refer to being watchful, vigilant, or observant. Some antonyms for this phrase could include inattentive, careless, or negligent. The opposite of being a lookout is to be distracted, disinterested, or unaware. As a lookout, a person is often on guard or alert, so antonyms could also include complacent, unguarded, or nonchalant. Another opposite for "am lookout" could be "am unaware," which means that a person is not paying attention or is completely ignorant of their surroundings. In contrast, being a lookout requires full attention and focus.