Being the lookout refers to a person's role of keeping watch, usually in a situation where danger or suspicious activity may occur. Antonyms for being the lookout would be phrases that describe the opposite of the lookout's duties, such as being oblivious, inattentive, or distracted. Ignoring potential dangers, not paying attention, or being unaware all could be described as antonyms for being the lookout. Being the lookout is important in many different situations, such as driving a car or walking through an unfamiliar area at night. Without being the lookout, danger could arise and cause harm or damage.