The phrase "wert on lookout" can be translated as being alert, watchful, or vigilant. Antonyms for this phrase might include being careless, inattentive, or unaware. For example, if someone is "not on lookout," they might be distracted or disengaged, unaware of their surroundings and potential dangers. Other antonyms might include being passive or indifferent, indicating a lack of concern or interest in one's environment. Ultimately, the concept of being "on lookout" is about being active and present in one's environment, which contrasts with the various ways people can be disengaged or uninvolved.